At the Night, looking at the sky of the crescent moon is brightly at night going back to Ixa is fighting against them but he killed them in easily.

Leaving one demon trembling in fear behind of the tree eye contract of Ixa's red eyes, visor.

Demon: P-P-Please, do-don't killed me!

Ixa: I asked you again! Where is Muzan Kibutsuji?!

Demon: I-I don't know, he'll killed us if we're tell him where he goes!

Ixa: Then, you are no used to me.

As Ixa slowly going to the Fuestle, holder on his belt, grabbing the Power Ixa Knuckle before inserted his belt and then pressed it.

Ixa Knuckle Rise Up!

He takes out of his Ixa out from his belt the Knuckle, filling much of the more energy in the knuckle pointing the demon in fear before he attempted to beg.

Demon: Wait!

Ixa: No.

He pressed the trigger.

Causing the massive shock wave beam out from the knuckle, hiting him causing him to screamed in pain before his body started to fading away.

Soon Ixa walks away, and he return back to his citizen form. Leaving the forest picking up the picture, looking at the picture of himself being happily carried the baby in his eye.

His eyes are narrowed are cold and guilty.

???: I'm sorry..... I wasn't able to protect you but I'll makes Kiva, Demons, Fangire pay for what they done to you.... (Y/N).

(Gurenge by Lisa)

(Tsuyoku nareru riyuu wo shitta) Seeing (Y/N) in the middle of the forest surrounded in the snow and the storm walking toward it, before changes in the main hallway replace by Kiva.

(Boku wo tsurete susume) Zooming in (Y/N), wearing his demon slayer uniform and his jacket, wielding his katana. Before he open his eyes. Narrows his eyes changes by the scene. Seeing Kiva flying in the straight kick with bat red wing in upside down at night with chain.

(Dorodarake no soumatou ni you) Tanjiro was landed in feet away when he was training landed next to the boulder. He gritted his teeth holding his katana.

(Kowabaru kokoro furueru te wa) His mentor Sakonji glancing at his student scenes changes Tanjiro and (Y/N) shares the small smiles for having a back before being serious in the exam facing the demon.

(Tsukamitai mono ga aru) They releases the big roar in battle cry to charged.

(Sore dake sa) Showing Sabito and Makamo are watching the brother battle.

(Yoru no nioi ni (I spend all day and night)) Zenitsu cowardly screaming away from Inosuke.

(Sora nirandemo (Staring into the sky)) While (Y/N), Tanjiro, Nezuko, are watching Zenitsu being chased by Inosuke. But Inosuke already caught him raise him in their air, struggle to get out Kamado sibling are watching in blankly and (Y/N) sigh in annoyed.

(Kawatte ikeru no wa jibun jishin dake) Showing Kanao smiling at the butterfly, changes to Genya narrows his eyes.

(Sore dake sa) Tamayo with her assistant Yushiro, and Monster trio like Jiro, Riki and Ramon playing poker inside the main hall.

(Tsuyoku nareru riyuu wo shitta) Nezuko was human once before her hair unfolded fall down, glancing at the camera wearing the bamboo.

(Boku wo tsurete susume) Showing the symbol of Kiva and changes into Demon realm and Muzan half glanced at the camera narrows his eyes. Nezuko with her brothers.

(Dou shitatte!) Kivat bit (Y/N)'s hand before his fangire marked appear.

(Kesenai yume mo tomarenai ima mo) Transformed into Kiva alongside with his brother using the breath of water, the demon are attacking shooting out arrow out from his eye hand and other demon throwing her ball smiling like maniac.

(Dareka no tame ni tsuyoku nareru nara) But the arrow red and black energy bat by Kiva using his katana and giving his brother a chance to cut the ball in half using the breath of water. Now Kiva is facing on drum demon.

(Nando demo tachiagare) Kagura is in Japanese style at outside before changes to Giyu with Pillars shown on the blade of Kiva in his citizen form, narrows his eyes as the future new Pillar.

(Sekai ni uchinomesarete makeru imi wo shitta) Now Kiva, alongside with Ixa, Taniro, Inosuke and Zenitsu is cowardly screaming. Insouke slashes his two swords and Ixa uses his Ixa caliber and Zenitsu strikes with thunder while Nezuko watching.

(Guren no hana yo sakihokore) And Kiva jump in the air, with the red bat wing on his right leg straight kick. Before high speeding directly to his enemy alongside with Tanjiro using the Ten breath of water.

(Unmei wo terashite) And (Y/N) holding hand with Nezuko and Tanjiro looking at the moonlight. Before (Y/N) glanced at the camera before transformed into Kiva showing his enemy on his visor like Muzan and Fangire.

In (Y/N)'s dream

(Y/N) opens widened up looking around, he didn't expected to be here in this black void world wandering where he is.

(Y/N): Where am I?

???: Nii san....

Making him flinch and turns towards the one he knows revealing his sibling Takeo, Shigeru, Hanoka with a frown expression.

(Y/N): Takeo, Shigeru Hanoka!

He can't himself to be excited with smiles and he sprinted off towards to catch up with them.

Shigeru: Why.....

Making him have confused look made him stopped running.

Shigeru: Why.... Why you didn't save us?!

The words had attack him and made him to be shocked.

(Y/N): Shigeru, listen to me! That we're....

Takeo: Listen to you?! Just what kind of brother are you! You and Tanjiro nii abandoned your family left here to die gotten killed us by the demon! You and Tanjiro nii said that you could be get home!!

(Y/N): We didn't know that! I didn't know our home was att......

Causing to be Hanoka to be crying with tears spread out from her eyes.

Hanoka: (Sob) Ni-Nii san..... You don't love..... (Sob) love us.... (Sob).... right?

(Y/N): Hanoka, listen to me! I do.....

Suddenly he felt something wrapped on his wrist, he glance at it making his eyes opens in wide seeing the chains has trapped and wrapped around his wrist.

(Y/N): Noo. Noo. Nooooooo!

As he tried to rush and catch up with them, suddenly the another chains wrapped on his right leg preventing him to escape from the chains and seeing his siblings.

He struggle to escape but he kept going towards on his siblings, another chains wrapped on his wrist and legs. He tried to reach for them forcing him kneel down and pulling by the chains but he need to strong, struggling to get up until he got on his feet, kept going.

And another chains again wrapped around on him, he kept pushing until he wanted to see his siblings again, stumble back on his feet for the bit, lending his hand towards on his younger adoptive brother.

(Y/N): Takeo.....!

Seeing his brother is anger towards and glare at him.

Takeo: We're don't want to see you again...

Making his eyes goes opens in widened that his brother said in coldly wanting (Y/N) to die.

Takeo: Let's go guy. We're won't ever see him again.

As his youngest siblings nodded, holding on Takeo's hands leaving in the dark void and vanished leaving (Y/N) alone.

Changes into the Kamado house, making his eyes goes opens in widened that horrors and haunted him in his past.

His adoptive family are dead in their house.

(Y/N): No.... no... Noooooooooooooooooooooooooooooooooooooooooooooooooooooo!!!!

He clutching his hair screaming in fear, the family he has lost.

(Y/N)'s dream ended

(Y/N) snapped out from his dream, gasped for air, he getting up sitting on the grass breathing in and out for the air, making Kivat woken up while he floating up in the air, with worried expression looking at his partner.

Kivat: (Y/N) what's wrong?

(Y/N): Nothing, it's just the nightmare.....

Kivat: Nightmare about what?

As he thinking the nightmare that haunted to him decided not to tell him.

(Y/N): I don't wanted to talk about it.

He gets up from the grass, while Kivat flying and landed to rested on (Y/N)'s backpack. (Y/N) returning back to travel to the worlds, he looked at his hand in neutral look.

Inner (Y/N): Just who are my parent are?

Until something strike him in his mind, he wide opened forcing him to kneel down his hand cover on his face, seeing the image, of the young woman holding of the child's hand, running away in the forest when the snow surrounded on them, while they were being chased behind by the unknown creatures.

As the image ended, removing his hand off his face, breathing in and out causing Kivat gets off his bag flying in the air looking at his parent in worried.

Kivat: (Y/N), you're okay?! 

(Y/N): Breathing in and out W-Who..... was that woman?

Kivat: Nani?

(Y/N): I... I.... I don't know what I saw.

Inner Kivat: (Y/N) just unlocked of his missing past, but however, it's not enough. I made the promise to his mother that I can protect him from the demon and fangire that wanted killed him, but I do know that (Y/N) will be True King can be unite humans, fangire and monsters.

As Kivat returns to his cheery grins.

Kivat: Saaaaaaaaaaaaaaaaaaayyy, (Y/N)....... how about to get something to eat, right?

As (Y/N) turns to his partner, before making of the small smiles.

(Y/N): Yeah, you're could be right.

As (Y/N) and Kivat journeying to the next town to get something to eat, until they not expected to here.....

Seeing the young girl has..... EATEN OF LOT OF FOODS THERE LIKES 100 OR 120 BOWLS OF THE BOWLS!!!

Making (Y/N) and Kivat comically to be shocked (Y/N)'s jaw dropped on the ground staring in disbelief, that young girl is one older than him, she had been eating a lots of food.

???: Um, excuse me? Is there any more food?

Chef: Nope! We're all ran out!

???: Ohhhhhhhh! No fair.... but how much I had to paid?

As the chef saying the bills, causing her to be disbelief and nearly fainted that she cost...... a lot, a lot, a lot of money to pay the bills.

???: Ehhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh?! I'm not sure, that I can paid that!

Chef: Sorry, if you don't have enough yen to paid, you knows the rules! You had to wash the dishes.

???: But.... But....

???: Here.....

As they're glanced turns to someone that paying for her, revealing it's (Y/N) holding the bag of yen. You been expected why (Y/N) gots the lot of money? 

Well thanks to (Y/N) for playing his violin known as Bloody Rose, has gained the popularity from the crowds in the different villages, they all gave him a lots of yens, since he gained of the popularity and the memory he needed memory to survive when goes outside to the worlds.

???: Eh, why?

(Y/N): Well, I didn't wanted the cute girl to be washing the dishes when you're doesn't have much yen. So why not have to help each other.

Making her flush in blushing on her face when she forms the smiles felt move from his words.

???: Eh, you think I'm cute?

(Y/N): Yeah....

He turns to the chef handing of the yen on his palm.

(Y/N): Is this good enough?

As the chef looked at him before open of the bag, making him to be looked at the yen how much it is.

Chef: Wow! Thanks kid!

As (Y/N) and the pink hair girl left to the restaurant, while the pink hair girl thanking and appreciate for helping her to escape from washing the dishes. 

???: Thanks for helping me out!

(Y/N): Chuckles No problem. I supposed we're never met before, right. I'm (Y/N) Kamado.

Mitsuri: Mitsuri Kanroji, nice to meet you too!

As she greeting in happily shaking his hand.

Mitsuri: So what you're doing here, (Y/N)?

(Y/N): Well, you see that I'm....

Until he was interrupted by the sound of growling coming from his stomach, he bit forgotten about, making his face goes pale and fall down on the ground that he wasn't eaten everything from last 3 days.

Making Mitsuri panicked and worried about (Y/N).

Mitsuri: GAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAH!!! Are you alright?!

(Y/N): Yeah.... Groan I'm fine. I just hadn't gotten to eat yet.....

Mitsuri: Oh no, I'm sorry that I had taken all the foods in the restaurant. But it's okay! Since you repaid me but it's time that I repaid you!

She puts determination and a smile on her face.

(Y/N): No, it's fine, I do.....

Suddenly she interrupted she grabbed one of his shirt, she sprinted off making the dust she made. Making the villagers with surprised looks at the scene, causing (Y/N) screamed, Mitsuri laughing in girly ways while Kivat...... is dizzy and sick by Mitsuri's immune speed.

After the minutes when they're arrive to the restaurant, as two teenagers arrive to eat for the food. 

(Y/N): That's really amazing and awesome!

Mitsuri: You're really think so? I didn't eat that much today!

She blushed for the bit seeing the young man is impressed of her eating of 40 bowl.

(Y/N): No, because I think you are truly amazing for your immune strength and you can eats all lot of foods. That's why your so strong!

Causing to be blushed harder!

Mitsuri: You're really think so?!

(Y/N): Yeah!

He nodded his head.

Before Mitsuri slowly spotted his violin.

Mitsuri: Hey, (Y/N)?

(Y/N): Hmm?

Mitsuri: Are you an violinist?

(Y/N): Yeah! Do you like to listen one.

Mitsuri: Of course!

As (Y/N) gets out from his seat, before taking out his violin from the case placing his chin under the violin before he plays the song.

https://youtu.be/nDyGKicybYE

Until he heard of the loud clap. Making his eyes slowly opens seeing Mitsuri and the other villagers giving to (Y/N) an applause for playing his violin and perfuming.

Mitsuri: Wow! That was amazing, (Y/N)! I think your a great violinist!

Making him blush in little avoiding eye contact from her.

(Y/N): Y-You..... really think so?

Mitsuri: Yes! That music you play was so beautiful! It's made me calm and relax that wanted make me fall in love with yo......

Until she was interrupted by the screamed.

Woman: Thief! Thief!

Mitsuri/(Y/N): Eh?

They're looked outside seeing the thief stealing one of the handbag running away to avoid from the cops suddenly he was judo throws on the ground by someone else, struggle to escape from the man's grips.

As the woman and the cops catch up with him, before the police taken care of anything to arrest the thief while the woman thankful to the young man.

Woman: Thank you so much, how do I repaid you?

???: Chuckles It's okay, you don't have to worried about everything of the thief. I'm just doing my job as the bounty.

Woman: Bounty hunter? Well if I need anything, will be you in contract that you'll comes again?

???: Sure, but my name is Nick. Nick (L/N).

Making Kivat opens wide his eyes.

Inner Kivat: No, it's can't be! Nick?!

Making something strike in (Y/N)'s mind.

Inner (Y/N): (L/N)? Nick (L/N)? Where could I would this before? But however, this might be my clue of my missing past.

He narrows his eyes, before leaving the money on the table, making Mitsuri looks confused at her new friend.

(Y/N): Keeps the change.

Mitsuri: Eh? (Y/N) wait! Where you going?

As (Y/N) went outside of the restaurant went catch up to Nick while he walking away going to his next bounty hunt.

(Y/N): Excuse me!

Nick: What is it?

(Y/N): Your last name is (L/N), right?

Causing him to be scoff.

Nick: That's correct. But who are y....

Making his eyes to be open widened in shock looking at half human staring in confusion recongnizes him.

Nick: You!

(Y/N): What?

Nick: Are you really?

As his hand reaching for his cheek, until suddenly, (Y/N) activate his aura vision seeing the Blue aura vision are the fangire and he heard of Bloody Rose is alerted him of danger.

Inner (Y/N): Dammit fangire is here!

As he ran past through him, making Nick turns to him with a sorrow looks while thinking about him.

Inner Nick: Is he..... really (Y/N)? The cousin I know as little brother?

At (Y/N)

At noon. As (Y/N) ran through in the forest run up to the temple he kept searching the fangire until he got a new aura vision is red meaning the demon is inside of the temple.

(Y/N): Dammit! Kivat!

Kivat: Yosh Kiva.....

???: (Y/N)! Where are you!

(Y/N): Oh crap!

He quickly snatch Kivat in his bare hand to quickly hide in his hand, glancing at Mitsuri was trying to catching up with him up to the top of the mountain where the temple is. While she was catching her breath.

Mitsuri: Mou! Why you goes fast?! You couldn't wait for me!

She cutely pout her cheeks looking at him in anger way with...... cute way.

(Y/N): Umm..... sorry about it, Mitsuri there was demon I th....

Mitsuri: DEMON WHERE?!

She screamed on top of her lung making her comically shrieked in worried near close to his face.

(Y/N): There....

As Mitsuri puts the determine face.

Mitsuri: Hang on, (Y/N)! I'll take them out!

(Y/N): But what happened if you gets hu.....

Mitsuri: Don't worry, (Y/N)! I'm the strong woman! I have my sword with me!

She smirked in bravery at him.

Until she grabbed her hilt pulling out her sword from her sheath out.... out.... out.... and out WHAT THE FUCK?!

Making (Y/N) sweatdropped at her sword.

Inner (Y/N): What the fuck is that?! Is this even the sword? Well but I even think called on blade whip.

Mitsuri: Here I go!

As Mitsuri charge towards the doors of the temple before she slide opening it. Causing the demons glanced at her.

Demon: What the he....

Causing him to be open widened in fear causing his body to be trembling.

Demon: Demon slayer!

As he attempting to run away from her.

Mitsuri: Ehhh! Don't leave yet! Third Style Form: Lovely Kitty Shower!

As she leaps in midair towards on the demon attempting to escape from her, as she created the series slashes of ranged arced attacks around the areas finally succeeded cutting of the demon's head.

Making (Y/N) jaw dropped in comical shocked seeing her abilty.

(Y/N): NANI?! Is this even her power!

Mitsuri: Ahh! I finally accomplished my work! You okay, (Y/N)?

(Y/N):......................... Yeeeeeeeeeeeeeaaaahhhhhhhhhh.... it was very awesome!

He force smiles at her powerful skills.

Mitsuri: Thank you!

She smiles at him, and he smiles back with a small suddenly his aura senses tingling that she hasn't noticed that someone is behind her, revealing it's the blue aura of Fangire he been chasing on.

(Y/N): Craps! Mitsuri looks out!

Mitsuri: Eh?

As the Fangire creates the invisible shapes of fang, he move his arm towards point on Mitsuri attempting to strike on her, suddenly (Y/N) grabbed her to push together until the fangire scratch on his arm.

Making the fangire smirked at him.

As they're rolling on the ground in few feets away, before Mitsuri spotted his scratch mark causing her to be worried.

Mitsuri: (Y/N) you're hurt!

(Y/N): Tch! I'm fine!

As he slowly getting up on the ground staring at the mysterious fangire gritted his teeth. Under his aura vision that fangire is different then other fangire it has more higher aura on him.

Inner (Y/N): That's guy! He's different then other Fangire!

As he attempting to transform but Mitsuri narrows her eyes went behind on (Y/N) defensive stance to protect their attackers.

Making him gasped in worried.

(Y/N): Mitsuri!

Mitsuri: Who are you, what you want?!

???: Chuckles I'll tell you my name later. But, to bad you had to face your..... death.

Mitsuri: Eh?

Suddenly she felt something wrapped on her wrist and leg, she eyes corner spotted before open widened in surprised seeing that she has been trapped by the wines.

As she tried to move to escape but struggled from the vines trapped on her vines before she looked at the enemy.

???: Now, good bye.

His eyes are cold in ruthless, summoning the invisible fang charging towards on Mitsuri causing her screamed and shut her eyes away from the fangs.

(Y/N): Crap! Kivat!

Kivat: Yosha! Gabuu!

(Y/N): Henshin!

Suddenly, it's heard the sound of ching. As she thought got stabbed by the fangs, she slowly opens her eyes before she opens in shocked, seeing the armor person blocks the attack using his forearm from the fangs.

It's Kiva!

Kiva: You okay, Mitsuri?

Mitsuri: Eh? (Y/N)?

She recognize the voices behind the helmet.

As Kivat uses his hand to chopped off the vines to unwrapped off her wrists and leg, before Kiva turns before making a combat stance.

Kiva: Run! I'll explain to you!

Inner Mitsuri: (Y/N), what are you? Are you human or monster?

???: I knew you would be here, Kiva....

Kiva: Huh?

Mitsuri: Eh?

Making them turns someone coming towards the temple revealing is........ Nick (L/N).

Kiva: Nick (L/N)?

Mitsuri: Why is here?

As they looked at him in awe seeing he narrows his eyes with mixture of determination/angry expression towards before stopping at outside the temple near the door.

Nick: Kiva..... I'll end your existence today.

Kiva: What?!

Mitsuri: No way!

The mysterious person smirked at the scenes.

As Nick takes out something revealing it's a belt. 

Kiva: Nani?!

Mitsuri: Belt?!

Kiva: Why he have that?

Nick: I will honor my uncle's memory.

He throw the belt around his waist to fit and connected each other. Placing the knuckle on his palm.

READY!

Nick: Henshin!

He placing the knuckle in his belt to transformed his armor.

Fist On!

The golden projection cross shot out from the belt, and spinning in the midair, creating an armor in golden. Coming towards on Nick to transformed as Kamen Rider Ixa.

Making them shocked and surprised seeing the man transformed.

Mitsuri: No way!

Kiva: Who is that?!

Kivat: (Y/N), that Kamen Rider Ixa!

Kiva: Kamen.... rider.... Ixa?

Kivat: Yes, it's sound for Intercept X Attacker! It's the system created for to fight against on Fangire and Demons to exterminate them!

Kiva: What?!

Mitsuri: Nani?! That's impossible!

She said in shocked that the armor can be created to defeat on the demon without cutting their heads off how is this impossible.

Ixa: Now, you'll face your extinction today, Kiva. 

He summons his weapons Ixa Calibur.

Kiva: Wait!

Ixa: No!

He pulls the trigger on the gun, causing the blast in rapidly hitting on Kiva making the sparks from his armor causing Mitsuri gasped in worried for her friend.

Forcing Kiva to be stumble back for the bit before looking didn't reacted fast that Ixa threw his right hook connecting on his fast, causing him to be "Gah" and flying towards on the wall to damage exit to outside.

Mitsuri: (Y/N)!

As she rushed on him towards in worried leaving the man smirking at the scene.

At Kiva

At Kiva rolling on the ground in few feets away, before he one knees stance at Ixa walking calmly towards on him.

Raising his Ixa Calibur in gun pointing at him, pulling the trigger causing the blast charges at him but he dodge the blast, running around in the forest avoiding from the shooting. As he jumps in the air throwing his fist at him.

But Ixa block it with his forearm in quick reactions, before giving kicking Kiva reverse round kick on his gut forcing him to push back send flying towards on the tree. Causing him to spit out his blood under his helmet.

As he struggling getting up back to the ground, seeing the feets near to him in close before he glance up facing at Ixa pointing his Ixa Calibur gun mode at his face.

(Y/N):...... Shit!

As Ixa pulling the trigger of his gun causing the blast out to firing on Kiva's face causing the spark came out from his helmet, causing him to rolling on the ground of the hill. As Ixa came down walking in calmly.

Kiva weakly looking at him getting up for the bit while laying down on the ground.

Kiva: Why? Why you attacking?

Ixa: Because, the humanity and fangire is unforgivable for attacking and killing of the humanity seeing them as the foods. But however..... I'll use Ixa powers to defeat and eliminate every signal of them I'll start at you Kiva.

Kiva: What?! I didn't everything wrong!

Ixa: You're wrong, but your day is over. Please return to the life of the God.

Suddenly the golden cross mask started to open revealing the true face of Ixa, releasing the massive shockwave burst out from his eyes. Making Kiva covering his arm to shield his visor.

Kiva: What the....?! His mask just open!

Ixa walking calmly to him, holding his Ixa Calibur in gun mode before pushing at the rod of Ixa Calibur turning it into sword mode.

Soon Ixa started to charging towards on Kiva letting out of the battle cry, making rolling dodge by Ixa's incoming attack swinging down his sword on the ground, Ixa glance at his opponents.

Kiva gets up making a combat stance, while Ixa standing there before doing his combat stance with his sword, while they stare at each other in the minutes.

Kiva first one to move to attack, he tried to sweep kick on the ground to get Ixa fall off the ground but Ixa luckily reacted fast, jumps in the midair turning his weapon into gun mode pointing his weapon towards on him before pulling the trigger causing the energy bullets charge at him.

But Kiva dodge the attack running away, Ixa landed on the ground safety causing him to be "tch" senses that someone behind. He quickly turns that Kiva launch himself in the air before throwing the punch towards on him.

Ixa turns his weapon into sword mode block that the block from the punch. They clashed formed in contact of the gauntlet and gauntlet.

Kiva: Why?! Why you attacking me?!

Ixa: Shut up!

As Ixa gives the counter round kick on his rib. Forcing Kiva to be pushed back on the ground while he holding his rib.

Ixa: I'll tell why I'm attacking you Kiva. Because..... Kiva is the enemy of the humanity and the leader of the Fangire!

Causing (Y/N) open widened in shocked under his helmet.

Kiva: What?! No that's not true that's impossible!

Ixa: It is! The previous Kiva was cruel and ruthless giving no mercy to the humanity. He was the one vow to destroyed the humanity to meets their extinction and then almost destroying of the monsters race....

Kiva: No! You're lying!

Ixa: No, it isn't but I'm telling the truth.

Kiva: Wha....

He didn't notice that Ixa taking out his fuestle before place it in his belt punch it to activate his final attack.

Ixa Calibur Rise Up!

Soon the belt started to electrify going towards on the Ixa Calibur he been holding on his gripped the blades filled with electricity. The background is replace the sun and orange aura surrounded on them making Kiva surprised that Ixa. Ixa raising his sword up in the air started cover in red energy swinging his giving powerful slash on Kiva in 3 times, causing him to be scream in pain.

Soon the background gets back to normal.

Causing him to be reverted back on his citizen form sending flying on the ground in few feet away from him. Making him groans in pain holding his injury rib where Ixa had been slashing through.

Ixa walking calmly to him while (Y/N) crawling back away from him.

Ixa: I shouldn't know you were Kiva when we're first met but it doesn't bother me why that your aura is similar to my little cousin.

(Y/N): What?!

Ixa: Too bad. But times for you to die!

Before he throws his sword towards on him suddenly he was interrupted by the blade wraps on his sword. Making him to be surprised under his helmet.

Ixa: Nani?!

The Ixa Calibur was forcefully pulls by the wrapped unwrapped Ixa's weapon spinning around in midrair before stabbed on the ground. Suddenly he was given by the front flip kick hitting under his chin revealing it's Mitsuri glaring at him.

(Y/N): Mitsuri!

As she glare at Ixa suddenly her expression changes into the comically pain kneeling down she holding her injury foot that when she kicked on Ixa's helmet.

Mitsuri: gaaaah! Itai! 

Inner (Y/N): Seriously?

He sweatdropped at her.

Ixa: You.... why you interrupted me?

He pointing his sword at her.

Mitsuri: Because...... he is the good person!

Ixa: What?!

Mitsuri: (Y/N) just good person, he warns sand save me from the attack that unknown monster tried to attack me but he tried to stop you from fighting to listening. So please don't attack on (Y/N)!

She fears the tears on her eyes begging him not to fight.

Causing Ixa to be gasped under his helmet in shocked, the words have struck him. Looking at (Y/N) recognizes.

Inner Ixa: It's can't be!

Ixa:........ Little Cousin?

Making them to open widened in shocked. Making (Y/N) to be shocked.

(Y/N): What?!

Before he could walk to (Y/N) suddenly there is the energy beam blast towards on between of (Y/N), Mitsuri and Ixa causing them to shield their eyes with their arm.

???: Well, well, well, it isn't the inheritor of the Kiva and the next user of Ixa.

Ixa turns and recongizes him into the anger expression pointing his sword at him.

Ixa: You! Knight!

Causing him to be smirked.

(Y/N): W-Who is that guy?

Kivat: (Y/N) be careful! That guy parts of the Checkmate 5! His name is Knight!

Causing Mitsuri screamed in reaction seeing Kivat.

Mitsuri: Gaaaaaaaaaaaaaaaaaaaaaaaaaaaah! Talking Bat! How cute!

She grabbed him hug him in tightly near to her almost expose breast, making him to be blushing and struggled to escape from her iron grip.

Kiva: L-Le...Let me go!

Making (Y/N) sweatdropped before shook his head back in the reality looking Ixa glaring at Knight in angry expressions.

Ixa: Why you here?!

Knight: Chuckles You know what I want..... I wanted Kiva.

Mitsuri/(Y/N): What?!

Ixa: You.....

He narrows his eyes into more anger under his helmet.

Knight: Because, he will tell me about where is Dark Kivat.

(Y/N): Dark Kivat?

Ixa: I won't let you have him to where is the dark Kivat.

Knight: I know but he will....

He pointing his index finger towards on Kivat he manages to free from Mitsuri's iron gripped Kivat has the anger expression glaring at him.

Kivat: I won't tell you where my father is!

Making them opens wide in shocked expects for Ixa.

(Y/N): What?!

As the stared in remained of silents after talking before Knight burst out of laughing in humorous knowing Kivat would refuses where his father is.

Knight: I know you won't tell me but.... will you tell me if you able to save your partner life?

Kivat: Wait?!

He smirked before he showing his fangire marks making Mitsuri shiver in fear seeing the mark reminded her of the stained glass mark. He pointing to (Y/N) activating on..... poison.

(Y/N): GAAAH!!!

Making him clutches his heart in pain making him fall down on the ground causing Ixa, Mitsuri and Kivat wide open in surprised and worried looking (Y/N) breathing heavily seeing the mark on his arm glowing green where the fang scratch him.

Mitsuri/Kivat/Ixa: (Y/N)!

Knight: Ahahahahahahahaha! You see I knew he would save you from my fang but however it's filled with poison, with any minutes will spread out to his body system and then he'll be dead for good.

Ixa: You bastard!

Knight: But I'll let him live..... if his partner will tell me where his father's location.

Kivat: I won't tell you!

Knight: Well, that's too bad it's strike one.

He snapped his fingers making the poison spread out more of the poison making him scream in pain and he sweating bullet fast.

Mitsuri: (Y/N)!

She quickly hold him in worried.

Knight: Tell me where is it! Or I'll...

Ixa: KISAMA!!!

He turns his weapon into gun started shooting at him in rapidly, he started to dodging from incoming bullets, before Ixa turns it into sword blade swing down his sword at him.

Suddenly it felt something blocked, seeing Knight has transformed into his Fangire form Scorpion making Mitsuri to be shocked and surprised that she never seen it before.

Knight shiftly moves his arms out from the blade he counter palm strike on Ixa's gut. Forcing him to be pushed back but still on the ground. Ixa glance up glaring at him under his helmet. Making Knight amused he still standing.

Knight: You're still standing not bad. Let's fight for the swordsmanship.

He summons his twin sword.

As Ixa charging at him tried to strike him but Knight block it with his sword, they're engage of the sword battle in high speed. Ixa tried to slash in upper but Knight block it with his sword in reversal grips giving him to counter slashes on his chest causing the sparks came out from the chest.

He rolling on the ground in few feets away one kneel glaring at him, taking out his Ixa Calibur in gun mode started started at him but Knight uses his sword to cut the energy bullets in half.

As Ixa kept rapidly shooting at him but Knight cutting the bullets in high speed while he kept firing until he ran out of the bullets before he could reload it.

Suddenly Knight appear in front of him making him gasped under his helmet, he throws the powerful punch on his chest send him flying towards few feet along landed roughly on the ground.

He cough under his helmet.

He stabbed his sword on the ground to help him up on the ground.

Knight walks slowly to human, showing his human form on his reflection stains glass, with a disappointment looks.

Knight: Such a disappointed but.... good bye.

He using his twin tails on his back charging at Ixa struggle to getting up and fight until his armor got sting by the tails causing him to screamed in pain and sparks came out from his armor causing him to reverted back into his human form.

He knock out fall down on the ground.

(Y/N): Niiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiicccccccccccccccccckkk!!!

Knight: Now then your next....

As he come closer to (Y/N) suddenly there was the beam of blast towards between of (Y/N) and Knight making him cover his arms before he remove them he looked surprised that the teenagers just vanished.

Making him reverted back in his human form gritted his teeth in anger.

Knight: Dammit!

In Unknown location

At Mitsuri she opens wide looking at (Y/N) laying down on the bed next to Nick, by the mysterious man using his power to fix him until Mitsuri on guard grabbing her hilt.

Mitsuri: Who are you! What you do....

Until she was stopped by raising his hand gesture her to stopped. Until he finished healing the scratch mark on his arm has vanished and the poison on him is gone making him to be gasped awoken.

Mitsuri: (Y/N)! You awake!

She rushed to him giving him a hug with a iron gripped that he needs air from Mitsuri's death gripped with lack of air.

(Y/N): Y-Y-Ye-Yeah! C-Can le-let me go now? I'm..... re-really some air.

Mitsuri: Oh sorry! My bad.

(Y/N) is catching his breath while being trapped by Mitsuri's death gripped hug with a lack of air.

???: Well, well, well, you're been awoken up Mr Kamado.

Making his head turns to someone using his aura that man has the same aura of the fangire. He narrows his eyes doesn't trust him.

(Y/N): Your a Fangire aren't you.

Making her gasped before she grippped her hilt narrow her eyes to defend him, causing the man chuckle for the bit.

???: Yes, I am. But I am not like my people I only wanted to the peace of humanity and fangire that the First King wanted it.

(Y/N)/Mitsuri: Wha.... 

???: I mean no harm for you, but I'll introduce myself. My name is Jakob, a part of the Fangire clan and the member who wanted the peace for the humanity and other monsters to peace in the world. 

Inner Mitsuri: So, handsome! But.... what fangire?

Jakob: It's been a while Kivat.

Kivat: Yeah, you to Jakob.

Making Kivat shares a smile at him while them to be surprised.

(Y/N): Kivat you know him?!

Kivat: Of course! We're know each other in long time ago!

Mitsuri: Um, excuse me? I hate to interrupted everything but can you tell me about what is Fangire?

As (Y/N) looking at his partner, before he nodded his head telling her everything.

He started to explaining about the fangire that they are vampire type monster, they're disguised as the humans secretly started to attacking on Human to using their invisible fang to suck on their energy life force. It's been existed by the thousands of the years before the demon and he tells her that he is half human and half fangire making her to be surprised.

Mitsuri: Oh no, that's terrible! We must te.....

Kivat: We're can't!

Mitsuri: Why?!

Kivat: If you tell the others, they're won't believe there is Fangire existed and what happened if the fangire disguised on human would attack on somebody else! Normal weapons can't attack them only Kiva's power and Ixa can stopped them.

Inner Mitsuri: Not even my sword can stopped them but what if Demon Slayer Corps could hear about it...... They might use (Y/N) as the weapon I can't let them know.

Mitsuri: (Y/N)...... I'll keep your secret safe.

Making them surprised and confusion.

(Y/N): Eh, why?

Mitsuri: Because, I know you are the good person and you only protect humanity from the bad monsters like the Demon Slayers Corp does.

Making (Y/N) heartwarming at her.

(Y/N): I see, thank you.

Making her surprised and then share of the smile.

Mitsuri: No problem!

Inner Mitsuri: But.... why does my heart feels heart skipping a beat. It's feel like..... nice and love.

(Y/N): And what is the Demon Slayer, Mitsuri?

Mitsuri: Eh? You never you heard of it?

He shooks his head in denied.

Mitsuri: Well you see... WE'RE DEMON SLAYERS ARE THE PROTECTOR OF THE HUMANITY, WE ARE THE GOOD GUYS AND THE DEMONS ARE THE BAD GUYS! THEY'RE ALWAYS EAT SOME OF THE PEOPLE AND WE'RE ALWAYS SAVE THE DAYS! WE'RE USING OUR SWORD FORGE WITH NICHIRIN BLADE TO ABSORBS OF THE SUNLIGHT, BECAUSE THEY ARE THE DEMON'S BIG WEAKNESS TO CUT THEIR HEADS OFF AND SPECIAL BLADES USED BY US!  WE'RE DEMON SLAYERS CORPS ARE AN ORGANIZATION THAT EXISTS IN HUNDREDS OF YEARS IN ANCIENT BUT WE'RE AREN'T OFFICIALLY RECOGNIZED BY THE GOVERNMENTS!

As she was explaining about Demon Slayers in excitement making (Y/N) and Kivat sweatdropped by her attitudes while Jakob face palmed before she lied down on the floor when she embarrassed herself.

Inner (Y/N): What the fuck?!

Jakob: So, Mr Kamado, do you know what is the Breathing Style?

Mitsuri: Oh! Oh! Oh! Let me tr....

Jakob: No, I'll explain this time. Mr Kamado, the Breath Styles were the one curretly taught by the Demon Slayers. Breath Styles make use of specific and concentrated breath patterns, which increase the users lung capacity and amount of oxygen in the blood. The increased amount of oxygen allows the user to increase their physical abilities and mental concentration to the point where they can match a Demon's strength. Focused breaths are also capable of clotting wounds from severe injuries and slowing down the circulation of poison in the bloodstream. 

(Y/N): Amazing....

Until he hears the groan from Nick, he getting up from the bed. Until (Y/N) and Mitsuri rushes to him.

(Y/N): Nick, you alright?

Nick: Yeah, I'm fine.... but sorry for attacking you.

(Y/N): No, no, no, no! It's fine!

Nick: But....

(Y/N): Look Nick, you saying I look like the previous bad Kiva. But I'm not. I'm only here to protect the futures and the humanity from the demons and Fangire.

Making the words to be stunned on him before he makes the small smiles at him.

Nick: I see. You are right.

(Y/N): But Nick, I wanted to ask you something.

Nick: Hmm?

(Y/N): How you know about me.

Making him to sigh at his question before looking at him in serious.

Nick: Because we are cousin.

Causing the statements to be shocked and surprised.

(Y/N): What?!

Nick: It's true, (Y/N). We are cousin and family. Your real name is (Y/N) (L/N).

(Y/N): That's..... my true last name.

Making his head nodded.

Nick: Yeah, ever since you are so small, I saw you as the little brother I wanted and I inherited from your real father.

(Y/N): Really?! What kind of he?

And Nick shook his head its not the time that he know about his father.

(Y/N): I see.

Jakob: If you boy done talking.... I'm going to give this weapon to Mr Kamado.

(Y/N): Weapon? Weapon for what?

Jakob: This.

He takes out the item covered in the cloak before removing it, revealing the Rapier.

Mitsuri: So beautiful.

Inner Nick: This weapon.

(Y/N): What is this?

Jakob: This is Royal Dark Rapier, it is beautiful, powerful that used to belong from the previous Queen.

(Y/N): Used to?

Jakob: Yes. Now use the sword if you are worthy of this weapon. But you'll creates your own Breath style.

Making him to be surprised.

(Y/N): My own... breath style?

Jakob: Yes, if you please.

(Y/N) gets up making Mitsuri to be worried and Nick to be neutral knowing that his cousin might use this power.

As (Y/N) slowly reaching for the sword before he grabbed the hilt suddenly the zaps coming from the sword causing the incredible power unleash giving to him and (Y/N) screamed in pain. Mitsuri panic before she help him.

Mitsuri: (Y/N)!

Jakob: Wait!

Mitsuri: What you doing?! He's need help!

Jakob: No, looked!

She looked at him.

As he gritted his teeth, putting a determine face before his other hand reaching for the hilt to letting of the incredible power giving to him feeling no pain and injury on him before the symbol of Kiva on his hand. Covering the crimson aura on him.

As (Y/N) finished letting the powers giving to him he turns to them with a determine looked.

Mitsuri: (Y/N)!

She rushed to him hugging, Nick smiles at him knew that his cousin would strong enough. while Jakob hiding his smile proud of him.

Inner Jakob: Your son is getting well, and finished of letting your power to him, Queen Mary.

At Night, Knight fighting for someone, until he heard of the footsteps making his head at them behind seeing (Y/N) with Nick narrows their eyes at him.

Knight: Well, well, well it's you guys! Here to lose again?

(Y/N): No, we're can defeat you.

Knight: Chuckles I like to see you tried.

Nick: Let's go, Little cousin.

(Y/N): Yeah. Kivat!

Kivat: Gabuu!

READY!

(Y/N)/Nick: Henshin!

Fist On!

They're transformed on their rider forms.

Knight transformed into his fangire.

Ixa: Let's go!

Kiva: Yeah!

They let out of the battle cry charging at them, Knight summons his twin swords, as they're reach for him in close, they threw the punch together at him but Knight block it deflect it started to swing his swords in attempt slash at them.

But Kiva and Ixa dodge the incoming attacking, they're kept kicking and punching at him but Knight keeps deflect their attack until Ixa was luckily in enough to close at him using his Ixa knuckle to sending the blast at him sending him to push back while on the ground.

Knight: Not bad, but.... How you can you keep up on this!

He summons his twin tails on his back charging at Kiva but Ixa gets in front of him as the shield causing him to  scream in pain send him flying towards on the tree making him to revert back in his citizen forms.

Kiva: Nick!

Knight: You're mine Kiva!

Under his helmet he opens wide before he shuts his eyes.

Jakob's voiceover: Create your own breath style.

Until he snaps his eyes opens.

Kiva: Breath of Bloody Moon 1st Form Crescent Moon Slash! 

He summons the Dark Royal Rapier, in his hand started to swing his sword to creates slash reassemble of the crescent moon cover by the red and white energy sending towards on the tail to cuts it making Knight to be shocked.

Knight: Bakana! He created his Breath Style?! And he has the Queen's Sword?!

He stance at Knight making him to be boil in anger.

Knight: YOU DAMN HALF BREED BASTARD!!!

As Knight charging to him while Kiva standing here in calmly, before Knight reach to him.

Kiva: Breath of Bloody Moon 3rd Form Bloody Rose Strike....

Suddenly he vanished without leaving a trace making Knight to be surprised.

Knight: He vanished?!

Suddenly there is rose petals falling down on the ground he picks up before he looks up at the sky until he felt something on his chest that he felt like sharp and hit suddenly he felt the pain and sparks came out from his body.

Knight: Nani?!

He falls down on the ground, before glancing at Kiva reappears in him making him glare at him.

Knight: How?!

Kiva: I used my Breath technique called Bloody Rose Strike, it's allows me to vanished to become with the rose petals and I manage to strike you that you couldn't see me. It's over now, Knight!

Causing him to reverted back his human form gritted his teeth in anger, having no choice that he has to retreat.

Knight: It's isn't over yet, Half breed bastard!

Making his body to vanished before Kiva could catch him but too late.

Kiva: Dammit where is he?

At Knight wondering in the middle of the forest. Feeling rage that Kiva defeats him.

Knight: DAMN IT!!!

He threw the powerful punch on the tree, causing it to split in half before he slide his back against on the tree sitting down.

Knight: I've never been so humiliated and lost the battle in my life! That... That... THAT HALF-BREED BASTARD!

He remember of the memory when Kiva manages to defeat him using the breath style.

Knight: I'LL DESTROY YOU!!!! KIVA!!!

At (Y/N)

Mitsuri: Ehhh?! You leaving?

And soon, (Y/N) with Nick and Mitsuri that they're going to split off to their separate ways to travel to the worlds.

Nick: You sure, you don't want to meets with the other family, little cousin?

(Y/N): No, it's fine. But I'll have to travel to the worlds in order to recover of my lost memory and some of the answers of myself.

Nick: I see, if you need me, I'll comes to help you.

(Y/N): Yeah, thanks.

They're shook hand with the smiles on their face.

Mitsuri was the bit sad that her new friend is leaving. She puts on her usual smile with a smile.

Mitsuri: (Y/N)?

(Y/N): Yeah....?

Suddenly he was interrupted by Mitsuri pulling him a kiss on his cheek making him blush in embarrassed while Nick chuckles.

Inner Nick: He do have uncle's charm.

At Demon Slayer Corps' HQ

Snake Guy: Achoo! Why do I feel like Mitsuri with somebody else?

At (Y/N)

(Y/N): Mitsuri! What you doing?!

She giggles with the small blush on her cheeks.

Mitsuri: I'm giving you good luck kiss for the charm that you'll travel to the worlds in safety.

(Y/N): I-I... see.... th-thank you.

He shyly away from her causing her to be giggles at his shy reactions.

Inner Mitsuri: Cute!

And so, the three split up to their separate ways, while Jakob watching and focusing on (Y/N) and forms a small smiles on him.

Jakob: All Hail to the True King.

He vanished without leaving the trace.

To be continued.

And that's all, it's the longest chapter I've been written right, guys?! And the next chapter that (Y/N) will be encounter to the Upper Moon lower she is the oc, that she will fall in love with him.

And why is Kivat and Jakob calling (Y/N) as the True King? It might be the clue for his missing past? Find out for the future chapter.

See you later! Wake up the Chains of Destiny!