Inside of the black void on the blackground on it alongside the painting of Kiva in his Emperor form and tea table.

Revealing Jakob sitting down on the chair before taking out of the book proceeding to reading it and revealing the name of the book called. "The Legend of True King Kiva"

Jakob: According to this book, the half human and fangire 17 now 18 years old name (Y/N) Kamado has find out he has been chosen by flying talking bat name Kivat the 3rd. He has transformed as Kamen rider Kiva

Showing the previous chapters that (Y/N) with his adoptive sibling Tanjiro and Nezuko reacts at Kivat. Next scene he transformed as Kamen rider Kiva.

Jakob: He has left his sibling to leave behind that he can search and finding the answer of the cure for his sister Nezuko and find out his origin.

Showing that Nezuko is sleeping before (Y/N) place the kiss on her forehead and the next scene that Kiva fighting on Fangires and then demons.

Jakob: He has encountered of allies and enemies.

Showing Mia with her grandma, Mitsuri Kanroji, Nick (L/N) and Lucie as allied and then Zane as enemy.

Jakob: He come for the Fina....

Showing that Kiva and Tanjiro fighting on Hand demons before Jakob interrupted.

Jakob: Opps! I almost spoiling that. I'm afraid you had to read it and find out.

He smiles at the readers.

At (Y/N)

(Y/N) is rushing in the forests while to be training in quick immune speed that could blink in eyes while he holding the Royal Dark Rapier in the backhand style.

He quickly glance while narrows his eyes spotted of the incoming several arrows to be charging toward at him.

He quickly turns his sword into the original position his grips holding on the handle to quickly in high speed to deflecting of the incoming arrows that throws on the different directions of areas or cut in half.

He quickly dodging in the air at barrel roll styles of the incoming attack from the two golem before he could hear of the noises on his ears.

(Y/N): Breath of Bloody Moon 4th form! Prison Hell Chains!

He summons red energy chains to surrounded and then wrapping on the golem's body to be trapping on their bodies' parts.

(Y/N): Breath of Bloody Moon 1st Form! Crescent Moon Slash!

He swings around the circle that his blade is now covering by the red bright in energy as he gripped on the hilt before he swing his sword in quickly to drawing of the crescent moon slash toward at his practice dummy.

As the energy slash went through in powerful with no lines on it suddenly causing all the Golems to be fall down by the perfectly toward on the grass before their bodies to be faded away into the dust.

He slowly stealth his sword before he turns toward at the bright moon he has the new appearance that his hair a ponytail small and wearing the red and silver gauntlet with a triple blades on the forearm of gauntlet given by Jakob and wearing the iron boots are red and silver with a smiles with a happy expression.

Inner (Y/N): I'm coming home Tanjiro.

(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. And Nick with soldiers wearing a high tech suit of armor and energy rifle guns.

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

(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 before showing static and glitch images of Death Strike and show back as 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.

(End opening)

(Y/N) with Kivat are walking toward in the miles of the direction toward the house of the Mt Saigiri where Mr Urokodoki live here while he was training on Tanjiro.

Kivat: Been a long time when we're left this place.

(Y/N): Yeah.... Let see if they're here.

Before he could opens the door but....

???: Nii san?

Making (Y/N) opens wide before he turns toward at someone very familiar is someone he knows about was.....

It's Tanjiro!

Tanjiro has the new appearance he has the longer hair reach to his shoulder on it, he looks so happy and joy to see him again.

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

Tanjiro: Yeah! You're gotten get a a new looks!

Making (Y/N) to be looks surprised before he forms the smiles at his adoptive brother at him while eyes contact.

(Y/N): Yeah.... You're gotten taller aren't you?

Tanjiro nodded his head.

(Y/N): Long time no se.....

He was cut by Tanjiro hugging on (Y/N) wrapping around on him before (Y/N) smiles and hug back to be embracing him.

Tanjiro: I miss you.... Nii san....

He tried not to cried.

(Y/N): Yeah me too. Good to see you again Mr Urokodaki....

He smiles before looks up and spotted on Urokodaki.

Urokodaki: Yeah, you too young man. Good to see you again.

He smiles under his mask.

Urokodaki: Shall we go inside to having the feast for the celebration for Tanjiro?

(Y/N): Feast?

Timeskip

Inside of the house there is the fish with sticks on it alongside with the hot pot being cooked on the fired while (Y/N) with Tanjiro looks surprised in awe of the foods.

(Y/N): Whoa..... There so much foods.

Tanjiro: Nii san is right, what with the occasion?

(Y/N): Since your brother has returned from his training and his journey and you're have been completed your all training, so we're celebrating. So don't be shy eat up.

Making two brothers to be smiling in joy before Urokodaki offering to giving two bowl with hot pot on it.

(Y/N)/Tanjiro: Thank you so much!

As two brothers eating their foods while Kivat eating his own food are the fish while Urokodaki are eating enjoying the foods.

He thinking on his minds while staring at them.

Inner Urokodaki: Tanjiro, there's nothing more I can do for you. From here on out, you'll be going to be same experience like your brother did when through such hardship and strife. Seem both of your training will seem like nothing in comparison. So, for now, at least, you should rest well without a care in the world.

After they finished eating their dinner from the hot pot while (Y/N) helping Tanjiro to cut off his longer hair to get back his original hairstyles and so Kivat sleeping on the small box.

While Urokodaki is preparing the clothes and gears for Tanjiro for the Final Selection Exam expects for (Y/N) seems to be ready for it.

Urokodaki: Hey, boys....

Making two brothers turns toward at Urokodaki with their heads turn before (Y/N) stop moving cutting the scissor.

Kamado brothers: Yes?

Urokodaki: Did you two enjoy of the hot pot?

Making two brothers to be smiles.

(Y/N): Yeah.

Tanjiro: Me too, we're haven't had the feast for long time ago!

While Urokodaki seems to be silence for the bit before let spoke out of the words.

Urokodaki: A strong man and growing boy like you both with a hearty appetite should be get stronger the more they eats, as well to be grow in size. But things for the demons too.

Making them to be neutral before their smiles to be fading away listen of Urokodaki's serious advise.

Urokodaki: Remember this. Basically, a demon is as strong as the numbers of humans he's devoured.

(Y/N): So in order to be gets stronger so they had to eat more to be get stronger right?

He ask in question.

Urokodaki: That's right.

He stood up.

Urokodaki: There are demons who gain to get more power, to become able to transform their bodies, and even uses spell.

He opens the small self door opens revealing the white fox with the mark of the red sun on the left side of forehead.

He grab it.

Urokodaki: When your sense of smell becomes keener, you'll be able to tell how many humans a demon's consumed.

He handed the mask toward at Tanjiro before he grab it with a curious expression on his face.

Tanjiro: What is this?

Urokodaki: It's called a "warding mask". I've charged it with a spell to protect you from harm.

Tanjiro and (Y/N) staring at the mask.

Urokodaki: And (Y/N), I can give you the extra spare of the nichirin sword how....

He was cut by (Y/N) smiles to waving both of his hands.

(Y/N): No, no, no, no, no it's fine I already have my weapon.

Making them to be silence in the few moments before Urokodaki let out of the words.

Urokodaki: Is that so.

Tanjiro: Hey, Nii san where your weapon?

Making (Y/N) to be forming of the smirks around on his face.

(Y/N): This!

He swing his arm suddenly there is the bright light of the dark red energy summoning on his grips to summon his primary weapon.

The Royal Dark Rapier.

Making them to be looks surprised to see the magnificent and beautiful weapons they're never seem it before.

They seeing it the different type of the sword then of the katana and has more powerful unknown materials and the energy then the nichirin steels.

Tanjiro: Amazing Nii san that sword is beautiful!

Tanjiro smiles in awe of the sword is currently holding on (Y/N)'s grip on the hilt.

Making (Y/N) to be letting out of the nervously chuckles from the statement of his little brother.

(Y/N): Thank you, Tanjiro......

Urokodaki: That sword, I never seen it before. The shape doesn't look like the katana, the sword look like from the foreigner world. Young man where you get it?

He looks at the rapier to analyze that he never seem it before he looking up toward at (Y/N) staring at the sword.

(Y/N): Oh I got it from Jakob. He is the technically the Fangire has been helping me training for the past months.

Making them to be looks surprised.

Tanjiro: Nii san... Yo...

(Y/N): It okay. Jakob is technically not like his other peoples. He only wanted the peace the equal between of humans and monsters to be living in harmony in peace. Jakob is like the good Fangire.

He smiles at them.

Making them to be released in relief and turns toward at (Y/N) with a small smiles expression seeing (Y/N) has the allied with good fangire.

Urokodaki: Is that so? I'm glad you're have the good friend toward who have great respect toward the humanity can be peace equals with monsters.

(Y/N): Thank you.

He smiles.

The next morning

The Kamado brother is wearing their clothes before looking at their sister is sleeping in her futon about in 6 months without waking up.

They're had some worried expressions on her she might be coma or might be dead in her futon forever.

(Y/N): Nezuko.....

(Y/N) placing his hand on her forehead to rubbing her like affection cat and Tanjiro holding on her hand.

Inner (Y/N)/Tanjiro: We'll be coming back no matter what, all right?

As two boys are outside of Urokodaki's house while they're having bit of the conversation before preparing to go for Final Selection.

Urokodaki: Don't worry about your sister. I'll take care of her.

(Y/N)/Tanjiro: Hai! Thank you very much!

They shouted and thankful appreciate for the old man has been taking care of them.

As they're sprinted off before they turning toward at Urokodaki to be waving at him for farewell. With a smiles.

Tanjiro: We'll be going Mr Urokdaki!

Urokodaki wave back at them.

As they're sprinted off in the few meters away from the house before Tanjiro turns toward at Urokodaki with a smiles.

Tanjiro: Say hello to Sabito and Makamo for me!

Making Urokodaki stop having waving seeing Tanjiro joins up with his adoptive older brother and gasped in surprised under his mask.

Urokodaki: Tanjiro... How did you know.... The names of those dead children?

But the brothers are being unaware being watch by Jakob narrows his eyes to be serious expression focus on them.

Inner Jakob: The young man will be the True King to unite all the Kingdom of Monsters Clans and the other boy will be..... The Chosen one to defeats Muzan.

At night two brothers are arriving at the area of the Wisteria flower, making them smiles to be admiring of the Wisteria.

Inner (Y/N): Amazing look at the wisteria flower...... Even they even out of the season

As they're working upstairs together on the stairs on the mounts before they're arriving here, making them to be looks surprised seeing alot of people is here.

They spotted a young has gentle eyes of pink lilac color and framed by thick eyelashes. She has thin black hair, worn tied a ponytail on right side of her head and wearing the butterfly pin on her hair.

A young man with a fair skin and downward-scoped, scared looking eyes and is soft brown to gold, short yellow, his hair is yellow of varying lengths of cutting off squarely at the ends where it fades to a darker orange.

And last one is the kid has the Mohawk hairstyles he has the large, inward-slanting eyes. The space his eyebrows would've been is constantly furrowed. Has the large scare ran over his right cheekbone from his ear and to over his nose.

And the future oc of the girls and oc.

Inner (Y/N)/Tanjiro: There are so many of people are in this place.

???: Everyone....

Making them turns toward at someone revealing is the twin are holding of the light lamp on their hand.

Inner (Y/N): Okay.... Those faces are started to be creeping me out. It looks.... Horrifying..... to me....

He sweatsdropping in fast bullet forward and spotted on the twin has the creepy face.

Twins: We're thank you for coming here tonight. To the Demon Slayers Corps Final Selection.

White hair girl: There are demons imprisoned here on Mt. Fujikasane, captured alive by the Demon Slayer Swordsman, unable to leave.

Black hair girl or boy?: That is because wisteria, which demons hate so much, blooms year-round from the bottom to halfway up the mountain.

White hair girl: However, there is no wisteria from this point on, and so demons might be around.

Black hair girl or boy?: You'll need to survive here for seven days to pass Final Selection.

As the twin bow down at them.

Twin: And now, be on your way.

Making two brother to be looks on determined expression willing to be preparing and ready for the final selection.

They're turns to looking at each others.

(Y/N): You're ready Tanjiro?

Tanjiro: Hai!

He nodded.

And so they're entering inside of the of the forest area before passing through of the torii to begins of their exam.

But (Y/N) was being unaware being watched by the young girl with her partner while she smirking.

???: Mine, mine, mine, mine there is it..... Such a handsome man become a king.

Timeskip to you by...... The cat of Demon Slayer!

At (Y/N)

As (Y/N) sprinted off to dashing forward in quick speed he narrows his eyes and using his aura visions on his eyes.

Inner (Y/N): According to my aura vision the nearby demon should be around on..... Here on the south!

He turns toward in south while he kept dashing toward in non-rest to keep finding of the demon until suddenly he heard of the battle cry making him react in time to be spotted of the demon dropping down charging at him.

He summons the Dark Royal Rapier in his hand before blocked it to be clashing the blade meeting of the arm of the demon.

Inner (Y/N): there is it!

He counter to be headbutted of the demon's head before he parried to roundkick on the chest causing to be separate the blade meeting the arm before he swing his sword to slash upward to cutting off the arm.

Making the demon scream in pain before he leap back away in few meters away between of (Y/N) he looks at his arm that won't able to regenerated.

Demon: You bastard! What you do?!

(Y/N): I have the special blade can stop and kills the demons!

He gripped his hilt with two hand.

Demon: You bastard.... I kill you!

He charging toward at (Y/N) in high speed using inhumane speed preparing to strike down on (Y/N) before he release the breath in concentration.

(Y/N): Breath of Bloody 7th Form Dark Strike!

The blade is covers by the red and black energy when the demon gets close to him suddenly (Y/N) rapidly in high speed to striking and stabbing through on the demon has several holes on their body making the demon looks shocked.

Demon: Im-Impossible! I lost?!

Causing the demon's body to be fading away from lost toward at (Y/N).

He swing his sword before stealthing his sword before he release the biggest sigh relax for the bit.

Inner (Y/N): That make about 7 of them. I know they're refuses to tell me about the cure for the demons returns back as humans. Nezuko, Lucia I promise you that I can turn you back as human again......

As he turns around suddenly he was unexpected when there is the young girl gets close to his face making him surprised and blush a little.

???: Hello!

Making him yelps in surprised causing him to be fall down to be landed on the ground with a surprised looks on his face while he blush in tomato.

The young girl laughing at his reaction.

???: Ahahahahahahahahahahaha! You're couldn't seen your face in fact..... You're look cute.

She flirty smiles and wink at him making him blush harder in red.

(Y/N): Wait! Who are you! And what you doing here?!

???: Ufufufufufu...... My name is.....

??? 2#: Rylee!

??? 3#: Rylee senpai!

Making turns toward there is the incoming people are two girl rushes toward at Rylee at the forest area.

Natalie

Mao

Rylee: Hey guys, you just arrive here!

She smiles at them.

Her two friend are walking toward at her the one is not happy and the other girl is very worried what well happened.

Until Natalie smack on Rylee, making (Y/N) to be wince at the scene while Rylee holding her head where the injury bumps is.

Rylee: Itai.... What was that for, Natty!

She pouted at her.

Natalie: You dummy! You should be.....

Until she gasped and spotted at (Y/N), making three girls to be huddling to be murmuring gossip to each others.

Natalie: *In whisper* Rylee... You were talking to the True King?

Rylee: *In whisper* That right.... 

She winks at them.

Nataline: Yo...

Until they're heard the rustling sound of the bushes and footsteps making them to be on guard. Looking at random direction on the bushes.

They're thought it was the demon but it's not. Revealing it was..........

Earwig Fangire!

(Y/N): Fangire!

Earwig Fangire: Ah......... More humans to eat. This might be my day.

(Y/N) turns toward at the girls with serious mixture of the worried expression.

(Y/N): You girls need to go....

He was interrupted by when Natalie pulling out of her gun making him looks at surprised when he see her shooting at Earwing on the shoulder.

Making him screamed in pain before grabbing on his shoulder before he looks at his hand cover by blue blood knowing it is.

Earwig Fangire: Kisama...... You're guys part of the Peace Alliance Force?

He scowled and growls in anger.

Making Rylee to be smirking at the fangire.

Rylee: That right. We are the Organization wanted the Peace between where Humans and Monsters clan can live in Harmony at peace as equal. My name is Rylee Ashina. This is my partner Natalie Evans and Mao Shinazugawa. It is nice to meet you.

She smirks at them.

While (Y/N) to be standing here to be shocked expression.

Inner (Y/N): Peace Alliance Force? What that, it is different than Different than Demon Slayers and those girls are human and posses the great powers!

Earwig Fangire: You bitch! I kill you!

He summons the invisible fangs around him before commands charging toward strikes at them and (Y/N) narrows his eyes.

(Y/N): Kivat!

He rushes toward to save the girls.

Kivat: Yosha! Kivatte Ikuze!

(Y/N): Henshin!

He sprinted to be charging until they're opens wide in surprised seeing that someone save them between of them.

Is Kiva!

Earwig Fangire: Nani?! Kiva!

Natalie: It really him.... The true King.

Mao: Wow.....

While Rylee smirking and interesting toward at Kiva doing his combat stance alongside with the sword on his grip.

Earwig Fangire: Kisama.... You damn half breed I kill you!

He taking out the red energy crystal as the center of the devices before he pressed the crystal suddenly it forming on Earwig Fangire into the battle suit of armor.

Making him to be looks surprised.

Kiva: That isn't looks good....

Kivat: (Y/N), be careful! That armor is the standard users of the Fangire soldiers. It is powerful with high tech advanced technology giving them extra strength, extra speed and extra dangerous.

He warned his partner.

Kiva: Got it, Kivat!

The Earwig Fangire summons of the energy blaster rifle to be pointing at Kiva before he pulls the trigger causing the energy blasts to charging at (Y/N).

Kiva quickly deflect out it before he concentrate with the Breath Styles Technique under his helmet.

Kiva: Breath of Bloody Moon 6th Form! Blade Tridents Fangs Strike!

He pulls and swing his sword sending the silhouettes of triple energy blade charging toward at the Earwig fangire but the Fangire already reacts in time he barrel roll dodge in few meters with one knee before shooting at the energy triple fangs to destroyed them.

He looks up at Kiva jumping charging toward at him, Kiva gets close to Earwig Fangire before doing another attack.

Kiva: Breath of Bloody Moon 8th form! Full Charge!

The sword of the blade is cover by the powerful red and black energy on it before he swing slash in vertically slash to be clashing by Earwig before he pulls out his sword meeting of the two blades creating a powerful shockwave while the girls to be stumbled back and cover their arms watching them to fight.

As they're separate of the sword before they're engaging of the sword fight when they're kept swinging their sword in several slash at their swords each others.

Before Kiva leap backward in the air, turns his sword into the reversal grips while staring at his enemy.

Kiva: Breath of Bloody Moon 3rd form! Bloody Rose Strike!

He turns his body into forms part of the several roses making the Earwig on guard to be looking around on the roses.

He take out his rifle gun to turns on into the electricity to pointing aiming toward at the rose charging toward at him. He pull the trigger causing the electricity to shoot out causing Kiva to be screams in pain before he revert back.

He rolling on the ground before getting close toward his opponent with a smirk under his helmet.

Inner Earwig: That's great! If I kill his half breed bastard brother, I will be promoted by Lord Callum I can place as Death Strike!

Before he could get close toward at Kiva suddenly the ground started to be rumbles making him looks surprised.

Earwig Fangire: What the hell?!

He looks down and spotted at the ground suddenly the giant green vines plant pop out from the ground started to hit on Earwig Fangire to send him flying toward to be rough landed on the tree.

Making him grant in pain.

As he slowly walking on the ground but Natalie rushes toward at him before rapidly shooting at him on the twin pistol on his chest making him screams in pain. Before she jumps in the midair to twist kick on his face, causing his visor of helmet to be smack to expose of his right eye.

She landed on the ground, she narrows her eyes knowing that she has the choice for it. She pulls the trigger to perfect shot on the red dot on his armor.

Causing the armor on him to be fading and he looks down on his hand that his armor has been destroyed.

Earwig Fangire: No! My armo.....

He was cut by when he looks up. Making him gasped seeing the magic circle under on top of him with lock symbols on it.

It was Rylee doing it. She smirks, she twist her wrist with her two fingers in the air before she swing down causing the blue energy ring to be wrapping on Earwig Fangire lock on him. He struggles to free.

Rylee: Now Kiva!

As Kiva slowly up looks up at them.

Kiva: Hai!

He grabs his sword before throwing in the air turning back into original position he held it in his grip.

He stood up opens wide of his leg, his hand slowly touching down of the blade, he concentration with his breath technique.

Kiva: Breath of Bloody Moon 10th Form! Full Moon of Bat!

He swinging his sword that is cover by the energy on it suddenly, it creating and summoning the giant red energy massive bat behinds on Kiva.

Kiva knows he can't last long to master of the 10th Breathing Form that he developing but he has to do it quickly!

Kiva: Take this!

He swinging to commands of the giant red energy bat before letting out of the roaring, he swing to hit on the right and left side causing the giant red bat hit on Earwing Fangire screams in pain before, Kiva raise up his sword in straight line. Making Red giant bat flying up in the air.

Kivat: Hurried (Y/N)! I don't know how much longer!

Kiva: I know! And...... This is the final to break the chains of destiny!

He hold the hilt with two grips before he swing down in vertical slash, until he burst out of the battle cry alongside of the giant bat charging toward at the Earwig Fangire let out of the screams. And so Kiva slam down his sword to commanding of the bat to be slam down to throwing of right wing to powerful hit on the fangire.

Making him screamed in pain before his body turns into the crystallized likes statue before shattered into pieces, sending his life energy soul to be floating away in the air until causing the ground to be scarring creating the Symbol of Kiva. 

While Kiva letting breath in and out before he turns toward at the girls with a smiles under his helmet.

Kiva: Thanks for helping me....

Rylee: No problem, cutie.

She smiles and winks at him, causing him to be blush harder thankfully for the helmet cover his helmet, he scratching his helmet.

Causing her to be giggles at his expression knowing that he is blushing.

Kiva: Th-Than...

Until he heards the sound of the screaming making them turns toward at the scream is coming from.

Kiva opens wide under his helmet realize who that coming from.

Kiva: It my brother Tanjiro!

He rushes toward at the random direction to following where the scream is at. Leaving the girls alone.

Natalie: Should we're reports to our boss?

Mao: Yeah, but that Kiva or known as (Y/N) (L/N) is truly a kind person that he care for the others and including his siblings. He reminds of my big brother.....

While Rylee smiles and focusing toward where Kiva have left them in this area.

Inner Rylee: You're really interesting me...... I will be forever serve you and by at your side, my True King known as my love.

Timeskip brought you by.....ADORABLE NEZUKO CHAN IN THE BOX AS THE CAT!!!!

At Kiva

As Kiva rushing toward to following where his adoptive brother's voice at and then arriving in few meters away. He opens wide in shock that he spotted a demon.

Inner Kiva:........ Okay that thing looks so ugly and hell.

And he turns and spotted the demon turns his hand into fist charging toward at Tanjiro while he unconscious. 

Kiva: I won't let you! Breath of Bloody Form 3rd Form! Bloody Rose Strike!

He transformed his body into several roses petals to charging toward at the fist charging toward attempted to punch on Tanjiro suddenly something cut off the fist.

Making Tanjiro woke up before he looks up when he spotted at the demon has been screaming in pain of losing his hand.

Hand demon: Who the hell cut off my hand!

Kiva: Me!

Making them to be looks up spotted toward at Kiva standing there on top of the branch, while Kiva cold glare at Hand Demon.

Tanjiro: Nii san!

Hand demon: Kisama...... DIE!

He sending throwing his several hands but Kiva quickly react in time before dropping off the branch toward, at the several hands to cutting of the several hands in high speed to avoiding of the hands.

Making Hand demons opens wide in shock at it.

Inner Hand Demon: Impossible! How is that man keep doing that and.... How strong and powerful of the blade he wielding!

Kiva landed near to Tanjiro.

Tanjiro: Nii san!

Kiva: Tanjiro, you're alright?

He head turns toward at his little brother.

Tanjiro: I'm fine!

Kiva: Good, Tanjiro I have a plan. I keep him busy while to slashing his hands to avoiding getting on you and..... Giving you the chance to cut off his head!

Making Tanjiro shook his head in worried.

Tanjiro: I don't know if I can do it nii.....

Kiva: You must. I believe you can do it. You're my little brother I know you do it.

Kiva smiling under his helmet before he turns toward at him. While Tanjiro staring at him for the minutes open wide.

Tanjiro: Nii san..... Hai! I can do it!

He shouted with a smiles of confident.

Making Kiva to be chuckles and let out of the laughing.

Kiva: I know you can do it! Let go!

Tanjiro: Hai!

They're turns toward and glaring at their current enemy that they are facing on has anger  expression on them.

Hand Demon: Damn you.... Damn you.... DIE!!!!

As he summons and sending of the several hands charging toward at Kiva but Kiva on guard to be react on time to be to kept several slashing the hands from the demons to defending on Tanjiro.

Kiva: Let go, Tanjiro!

Tanjiro: Hai, nii san!

As two brothers of Kamado let out of the battle cry charging toward the demon while Kiva kept slashing and Tanjiro following him. Until their senses alerted them of the incoming dangers.

Inner Kiva/Tanjiro: The vision/scents is telling us from the ground!

Making them to be using the immune jump out to dodging in midair suddenly the hands pop out from the ground but missed them. While Demon watching them with opens wide.

Inner Hand Demon: Th-They jumped! Dammit, I missed them! Yeah, but no way can he dodge this attack in midair!

He combines of his hands together before creating a giant hand charging toward at them, making them gasped.

At Sabito and Makomo

Makomo looks so worried expression about Tanjiro is going to lose the demon like the same fate how they die.

Makomo: Do you think Tanjiro's going to lose, too? His neck is so tough after all.

Sabito: He may lose, and yet, he may win. Either way, there's one irrefutable facet. That Tanjro and his brother..... is the man who sliced the toughed, largest boulder of all. And his brother that the Ghost King told us...... He is the True King.

At Kiva and Tanjiro

Kiva: Tanjiro!

Tanjiro: Hai, Nii san!

He step on Kiva's shoulder to dodge of incoming attack of the giant hand before he landed on the arm rushing toward at Hand demon while Kiva keep blocking to clashing the palm.

Inner Hand Demon: He deflected me with the help!

As the hands out from his arms charging toward at Tanjiro. Tanjiro narrows his eyes doing breathing concentration.

Tanjiro: Total Concentration! Water Breathing!

As Tanjiro kept rapidly several slashing on the demons to evade of the incoming hands while charging toward at his enemy's neck.

He jumps in midair before getting closer toward at the demons's neck before Tanjiro prepared to slash.

Inner Hand Demon: He's get too close to me! Don't worry. My neck is tough! He can't even slashed it!

Tanjiro: First Form!

Kiva: Go Tanjiro!

He shouted at his brother after he was free from the hand's gripped.

Inner Hand Demon: As soon as he fails to cut my neck, I'm going to crashed his head! And then bat monster armor motif! Just like I did to the other one!

He charging toward at Tanjiro using his arms.

Until Tanjiro found the weak spot, Tanjiro release the battle cry he swing his sword in powerful to cutting through his neck his blade covered by the water splash.

Making Hand demon to be looks shocked that this kid has finally killed him after cutting through his neck to separate his body.

Tanjiro: Water Surface Slash!

To be continue
Wow! Been long time I just chapters, huh?! And we have a new oc girls is here in the first appearance of the first chapters!

And the next chapter will be (Y/N) and Tanjiro will be finished their final selection after 7 days and they are getting of the Nichirin swords!

And Taisho secrets!
(Y/N) with his adoptive brother and sister, Tanjiro and Nezuko are smiling to each others.
Tanjiro: You were a amazing and strong Nii san!
Nezuko: Hmphf! Hmphf! (He's right! You were so cool!)
Making (Y/N) to be chuckles.
(Y/N): Yeah, thank you very much but you were very cool when you're finally defeated the demons to avenge of your fallen seniors who were the students of Urokodaki.
Tanjiro: Arigato Nii-san! Ha, now for the Taisho Secrets! I heard nii-san who were very popular and handsome for playing his violin when he gets lots of admirers of the girls and making Nezuko jealous back in our villages.
Making (Y/N) to be laugh out of his nervous expression and scratching his back head.
(Y/N): Hahahahahaha.... It was nothin....
???: (Y/N) SAMA!!!!!
Making them to be pale and their eyes went blue in anime styles expect for Nezuko gaining flame aura in comical surrounding here.
Tanjiro: Nii-san......
(Y/N): Yeah.... NIGERU!!!!!!
As they're running away expect for Nezuko for fired up with fighting gestures with tick marks before letting out of the cute angry puffs. Until they're come back for Nezuko and grab her.
(Y/N): Nezuko let go!
Tanjiro: Hurried nii-san! Ah and please enjoy reading to vote our story and the author's stories. Hurried Nii-San!
Fin!