Up in the Lunar Kingdom we see (Y/N), Rika, Henry and Sagume in the library looking for the book on the five warriors of old. While they searched (Y/N) continued to discuss with the two.

(Y/N): So, how did you two find out about the five warriors of old?

Rika: My mother told me about them. She said that I was the generation that would be caring the torch

Henry: Same with me, though my dad didn't make it sound so....dramatic. What about you?

(Y/N): Well, I found out thanks to-

She was cut off by the door to the library opening. Looking over they see Calu was the one entering. Once she saw them all looking at her, she blushed a bit out of embarrassment. (Y/N) smiled at her and motioned her to come over, which she did. Once she made it she began to pat her head a bit.

(Y/N): It was thanks to her that I learned of being one of the warriors

Rika and Henry looked at her causing the small girl to become a bit nervous from their stares. Henry then crouched down to her level and gave her a smile, while Rika just looked away with a small huff.

Henry: Hey, I'm Henry and this is my friend Rika. It's nice to meet you

Calu looked him for a few seconds before looking up to (Y/N) who give her a smile and a small nod. She then looks back to Henry.

Calu: I-I'm Calu

Henry: Well, it's nice to meet you Calu

Calu smiled a bit to him now feeling slightly less nervous than she was before. Rika then spoke up.

Rika: This is nice and all but how about we get back to looking for that book

(Y/N) lets out a small sigh and nodded telling Calu to go sit down since they needed to look for something. Calu nodded and went to find a place in the library to wait. With that the four got back to searching for the book. They continued for some time until Sagume found it.

Sagume: Your eminence, I found it

(Y/N): Nice work Sagume, now we can learn more about the warriors of old

(Y/N), Rika and Henry were about to sit down but stopped when an alarm went off. (Y/N) looked up at it holding a solemn look before putting the book down.

(Y/N): Looks like this gonna have to wait for a bit. We need to see what's going on

With that the four leave the room, while Calu was escorted back to her room for the time being. They soon make it to the throne room seeing the others were already there. And soon a large hologram of Yasaka appeared with a worried face.

(Y/N): Yasaka, what's wrong?

Yasaka: I'm sorry for bothering you once again with our trouble. But we're under attack again

(Y/N): Who's attacking you all

Yasaka: Atlas

(Y/N) gained a furious face upon hearing this.

(Y/N): Those bastards

Yasaka: They are currently attack a city on the edge of the Youkai Kingdom. Currently the warrior youkai that had been stationed there and the ones we dispatched to help are holding up against Atlas's forces but I don't know for how long

(Y/N): Say no more. We're going down to help now

Yasaka: Thank you

With that the hologram dissipated. (Y/N) looked towards everyone in the room seeing them all staring at her with looks of determination. With that she nodded.

(Y/N): Lets go

Down in the city we see multiple warrior youkai fighting against Atlas's army. Both sides were currently even and were holding up against each other. Ironwood and Winter watched from the back as their soldiers rushed into battle.

Ironwood: These freaks of nature are going to meet their end soon. And soon that freak who thinks she's some type of queen will perish soon too

He laughed to himself a bit until he heard a sudden sound. Looking up he sees multiple beams shoot down from the sky. Once they landed rabbit soldiers rushed out from them having been teleported from the Lunar Kingdom and joined the warrior youkai in the battle against the Atlas soldiers. The battles favor was now tipping in the youkai's direction thanks to the rabbit soldiers now joining the battle. Soon multiple plasma daggers came and skewered multiple Atlas soldiers. Sakuya landed shortly afterward brandishing more plasma daggers glaring at the Atlas soldiers. She quickly dashed through more of them slashing most of them along the way before jumping above a group and throwing down many of her plasma daggers killing them once they stabbed into them. Sakyua then lands glaring at many Atlas soldiers rushing towards her. Sakuya sighs and closed her eyes her energy surrounding her.

Sakuya: This is my Last Dive. All blades unlocked. I'll charge straight through!

She through many daggers forward ahead of herself though they along with the soldiers seemed to slow down to a crawl, until it completely stopped. Sakuya dashed behind them and slashed them all rapidly from behind. Before jumping in front of them propelling herself off a magical platform that she generated underneath her feet, then giving them last large slash with her daggers. She dashes back to her previous location with time now resuming with the dagger she had thrown before continuing forward going right through the soldiers quite easily due to the injures that Sakuya had given them during her time stop. Sakuya nods to herself and continue forward to continue the fight. Marisa then came in landing a heavy stomp on a Atlas soldier's head killing them. One soldier tried to rush at her and attack her only to be knocked away by Marisa swing her cannon at them, then firing a blat from it directly into them sending them into another group of Atlas Soldiers. Marisa chuckled to herself before turning and firing multiple energy missile towards multiple groups of Atlas Soldiers knocking them around. Marisa turned again seeing a large group of Atlas Soldiers heading straight towards her. She smirks as she grips the handle of her cannon activating a more unrestricted mode of it.

Marisa: Hakkero! Initiate cannon mode! At times like these, the one who panics-LOSES!

She pulled out a missile launcher as well putting both her cannon and it on her shoulders. Then firing a large beam form her cannon with it quickly consuming the soldiers that were rushing at her, while the cannon was firing, she was also firing missiles into the beam causing more damage to the soldiers. She soon stops smiling to herself at her work, seeing all the soldiers laying on the ground with their aura now broken and them being unconscious. Ironwood glared forward at the Lunar Kingdom forces as he soon sees (Y/N) enter the fray making quick work of many more Atlas Soldiers. She soon makes it over to Ironwood with the two glaring at each other.

(Y/N): Didn't you think you had the balls to do this tin wingding

Ironwood: You have a lot of nerve, what do you think you're even doing opposing my forces

(Y/N): Oh, nothing much just protecting my allies. That's right the Youkai Kingdom in under the protection of the Lunar Kingdom. So, if you start a war with them, then you start a war with me

The two continued to glare at each other until Ironwood started laughing confusing (Y/N).

(Y/N): What's so funny?

Ironwood: Well, if I'm starting a war with you, then this will be good test drive for our new weapon!

He then pulled out a remote pressing the button on it shortly afterwards. Seconds later the ground began to rumble confusing (Y/N). She soon sees something large leap into the air off in the distance. (Y/N) sees that it was heading straight towards her and once it was overhead, she jumped back avoiding getting stomped on. Once she landed, she looks up seeing the large Blue cybernetical enhanced dinosaur glaring down at her.

Ironwood: Say hello to Atlas's newest weapon. MetalGreymon!! Now then kill her!

He presses the button again causing MetalGreymon to roar before it then rushed at (Y/N). (Y/N) jumped back again firing a Shield of The Just at it only to see that it seemingly did nothing shocking her. She quickly dodged out of the way of the dinosaur swiping at her with it's large mechanical arm. She tried to get some distance between her and MetalGreymon only to find it shoot out it's mechanical claw at her hitting her directly hurting her as well. MetalGreymon quickly retracted it's claw before roaring it's chest opening then firing out missiles from it. (Y/N) tries to defend herself but soon finds herself being quickly moved out of the way of the missiles. Once they landed (Y/N) looked to see who had saved her seeing Rika standing there and soon Henry joins them. (Y/N) got herself back onto her feet nodding to her.

(Y/N): Thanks for that

Rika: Don't thank me just yet, we still have that thing to deal with. Now I think we stop playing around and start fighting seriously

(Y/N) nods and the three quickly transforms into their powered-up forms. MetalGreymon growls at them before rushing forward towards them. In response Dukemon rushed forward as well clashing her shield against MetalGreymon's claw. The two struggled against each other for a little bit before Sakuyamon landed a heavy kick to the top of the dinosaur's head causing it to stumble back from the pain leaving him open for MegaGargomon to come in and land multiple heavy punches onto MetalGreymon's face before grabbing his horns then kneeing them in to gut. He then lifted them overhead and slammed them down into the ground causing multiple cracks on impact. MetalGreymon kicked itself up slow and roared as a blue flame surrounded it. It soon dissipated and fired out it's claw at MegaGaromon who caught it then pulling it towards him. Once MetalGreymon made it over to him he knocked him up into the air with an uppercut. With that the three fired out attacks towards it.

Sakuyamon: Amethyst Wind!!

A twister of crystalized cherry blossoms were sent towards MetalGreymon cutting them deep with each one.

MegaGargomon: Gargo Missiles!!

He fired out both the missiles on his shoulders and once they made contact with MetalGreymon they detonated in a large explosion that injured the dinosaur even more.

Dukemon: Lightning Joust!!

Dukemon fired out the attack with it exploding on contact with it injuring it even further. It then fell to the ground barely able to move.

Dukemon: Looks like your little weapon wasn't all that much of an issue Ironwood

Ironwood: That's where you're wrong you damn freak. I still got one last trick up my sleeve

Ironwood then pulled out that orb with the X shaped symbol in it. The three looked on confused, while Ironwood laughed to himself.

Ironwood: Now then, MetalGreymon! Evolve and crush these fools!!

He threw the orb to the downed MetalGreymon with while it was flying towards it, it began glowing. Once it made it to the cybernetical enhance dinosaur it entered it causing it to become completely enveloped in light. It soon stood up and roared to the sky catching everyone's attention. It's body began to morph and soon a big flash of light consumed the area. The light soon died down as the three look on in shock at the newly evolved MetalGreymon.

It's newly evolved form emanated raw power as it soon roars at them rushing towards the three. MegaGargomon tried to hit it with a Mega Barrage but was stopped by MetalGreymon X slashing him with it's claw before headbutting him knocking him back. Sakuyamon tried to attack with multiple attacks with kicks and her staff but found them to do nothing and was swatted away by it's tail. Dukemon then tried to slash at it with her lance, only to be blocked then bashed into the ground with MetalGreymon X's new cannon. It then stomped on her crushing her a bit, before getting off then clashing with MegaGargomon again. A current of electricity was sent into him shocking him and earning pained screams from him. He was soon knocked back and over. Sakuyamon tried to attack from behind but was quickly grabbed and crushed a bit before being thrown to MegaGargomon. Dukemon picked herself up and sees MetalGreymon X about to swing it's cannon at her. She goes to block it but soon finds to it to do nothing and was knocked over to the other two. Ironwood laughs at this.

Ironwood: YES!! Now finish them off!!

MetalGreymon X pointed it's cannon at the three and began charging up an attack ready to finish them. All of Dukemon's retainers tried to get over to the three and help them but couldn't as they were busy dealing with some other Atlas Soldiers. MetalGreymon X was about to fire.

???: Justice Kick!!

Suddenly they were stopped by a figure knocking back and dazing the evolved dinosaur. The figure soon lands onto the ground in front of the three allowing everyone to get a good look at them. It was a male masculine figure, with a robotic arm and a red scarf that blew through the wind.

Man: Listen here evil doer, your reign of terror comes to an end. You will face the wrath of the figure of justice! The light in the dark who cries out for peace! The one who all villains shake in their boots to face! Justimon!!!

https://youtu.be/FBfvOMZgB4A

Everyone looked at him in shock and confusion, until they hear something small clapping. They look to the sound seeing a small pink creature that had wings and a heart on its stomach.

Small creature: Nice job as always Justimon!

Justimon: Thank you MarineAngemon!

Ironwood: Enough of this MetalGreymon X kill him!

MetalGreymon X roared at this and rushed towards Justimon. Who jumped over it's attack before striking it in the side of the head knocking it back again. He then followed up multiple kicks and punches before firing a hug burst of energy into it.

Justimon: Justice Burst!!

While this was going on MarineAngemon floated down to the three seeing they were injured.

MarineAngemon: Don't worry, I'll heal you!! Ocean Love!!!

MarineAngemon's body glowed a bit before the light spread to the three healing them of their injuries. The three got up now fully healed and nodded to each other rushing back into battle all the while MarineAngemon cheered. Sakuyamon joined Justimon with a large kick to the face of MetalGreymon X making him stumble back a bit more. MegaGargomon came from behind and fired out a Mega Barrage hitting it with every projectile injuring it futher. Dukemon then came in quickly rushing towards it. Dukemon stabbed them in the chest with her lance. Time seemed to slow as MetalGreymon X looked down at her as she looked up at it. The light from before surrounded MetalGreymon X before it spread to Dukemon shocking her. Dukemon lets out a yell as MetalGreymon X lets out one more pained roar as the light then burst around the two knocking the other three back. Everyone looked on in shock and awe as the light soon dissapated. Once it was all gone there stood Dukemon but much different than what she was before. Her armor now looked more advance. Their lance now looked to be made of plasma and their shield was now even more advanced. She had evolved into Dukemon X.

Dukemon X glared towards Ironwood who growled upon seeing this.

Ironwood: Everyone, retreat now!!!

With that all Atlas Soldiers who were still up and walking or alive quickly fled back to Atlas all the while Ironwood glared at Dukemon X. Dukemon X lets out a small sigh and transformed back to her regular form looking like she was about to fall over but she was quickly caught by Sakuya. Some time passed after that and Yasaka and the sages appeared.

Yasaka: Thank you for helping us once again, (Y/N)

(Y/N): It's no problem, just doing what I had to do. And now we got a reason to attack Atlas

(Y/N) got up still a bit shaky but was stable.

(Y/N): They want to start a war, then they got a war coming their way

Yasaka nodded at this and the two shake hands ready to help each other against Atlas. (Y/N) then turned to Justimon and MarineAngemon.

(Y/N): Now then who are you two?

Justimon: Why, of course I'm the hero Justim-

(Y/N): I mean your real name

They both look at her a bit shock.

(Y/N): I know that isn't your real name or your real form

Justimon and MarineAngemon both looked at each other before sighing. A bright light surrounded the two as they morphed. Soon revealing their real selves.

Justimon?: I'm Ryo

MarineAngemon?: And I'm Cecillia 

(Y/N): There, was that so hard?

Ryo sighed a bit.

Ryo: Well sorry for me wanting to keep up a hero persona

(Y/N): Well, we all can't be winners. Anyway, are with us against Atlas

Ryo looked down thinking a bit before nodding.

Ryo: Yeah, I can't let people like that punk do whatever he wants after all. Especially with what ever he could be playing

(Y/N) smiled at this and looked to everyone around nodding to them.

(Y/N): Alright, Atlas won't know what will hit them!

Both parties cheered at this and soon the camera faded to black.