(At the resistance's new base, Raymond and Kataguri are seen standing in front of the resistance heroes and NATO Soldiers as the former makes an announcement.)

Raymond: Today, we stand and fight! We fight against Union's corrupt order! To attain freedom and equality for all! We are the brave! We are the fierce! We are NATO!

(The NATO Soldiers cheer up as Kataguri speaks up.)

Kataguri: Our time has come. In a few hours we break the yoke of oppression... forever! No more Union. No more League of Darkness. For freedom.

Heroes: (unison) FOR FREEDOM!

(Meanwhile at Castle Doran, Kagerou found out through Jiro, Ramon and Riki that Union lost many key members, and called Ruan Mei, Ikki and Stella.)

Kagerou: Today, we show the world the power of the Fangire Kind. Today, we bring what's left of Union Academy... to their knees!

Ruan Mei: For the sake of the Fangire, we will fight.

Ikki/Stella: (nod) Let's do it.

(At Union Academy, the remaining key members are seen gathered as the Headmasters come in.)

Ozpin: I believe you must have heard of the insurrection that was incited by Kamen Rider Millennium and his allies.

Aultcray: It's obvious that we need to take action and surpress this filth. We must put an end to this anarchy before it spreads.

Ironwood: I have gathered a massive army of Atlas Soldiers. They will help us stop those rebels.

(Suddenly they hear some rumbling sounds.)

Malty: What the hell?

Rias: (stern) It's them. They are here.

(Then all of the resistance members are seen arriving at Union Academy as the Kamen Riders are in in their Rider Forms. Suddenly some Kamen Riders come in.)

Dark Kiva: Mind if we help?

(The Union Students come out of the academy as the heroes glare at them.)

Rias: (stern) You've got some nerve to come here after the damage you caused us. I shall avenge my beloved Issei by killing you all!

Malty: (angry) You should never have messed with the Gods and Goddesses of Union. Now you're gonna pay dearly!

Sirzechs: Especially you... (points at CFVY and Naofumi's party) Traitors!

Aultcray: (glares at Naofumi) I'll finish what Motoyasu couldn't, you fiend!

(Then everyone gets in their fighting stances.)

Dark Kiva: Checkmate Four.... Assemble!

Skull: Now... count up your sins.

Millennium: Now... it's millennial time!

Il Sindaco: So this is Union? Interesting.

Kibutsuji: Know my name and fear it, I am the son of Tiamat and Muzan.

(They then prepare to fight as they charge at each other. Millennium dodges an attack from Summer, and then he kicks her.)

Millennium: I've been waiting for this long enough.

Summer: (glares) I don't even know you!

Millennium: (glares) You will.

(Summer tries to slash Millennium, but he blocks her attack and punches her stomach.)

Millennium: This is all the so-called Pro Huntress has to offer? (dodges Tai's punch) Oh, did you want to practice first?

(Tai angrily sends a barrage of punches, but Millennium blocks them like they're nothing.)

Millennium: Gotta try harder than that.

(Raven Branwen tries to attack Millennium. but he grabs her sword, and breaks it, much to her shock.)

Raven: My sword.

Millennium: Pathetic, and to think I didn't stand up to you earlier.

(Meanwhile, Rias launches a Spell of Destruction at Sasword, who merely smirks.)

Sasword: Clock Up!

CLOCK UP!

(Sasword quickly dodges Rias' attack and kicks her in the stomach before executing his finisher.)

Sasword: Rider Slash!

RIDER SLASH!

(Sasword slashes Rias in half, and she explodes.)

CLOCK OVER!

(Sirzechs gasps by seeing his sister easily defeated by Kamen Rider Sasword.)

Sirzechs: (angry) YOU WILL PAY FOR MY SISTER!

(Sirzechs charges at Sasword, but is then stabbed by Saga.)

Saga: Deja Vu, Sirzechs.

Sirzechs: (coughs blood) Tokuhiko...

Saga: Hello... (smirks) and FAREWELL!

WAKE UP!

(Saga executes his finisher, and destroys Sirzechs, making the other headmasters gasp in shock.)

Ironwood: YOU'RE GOING TO PAY FOR THIS!

(Ironwood gestures his soldiers to charge at the heroes, but then the Checkmate Four take action and start kicking and slashing the Atlas Soldiers. Malty is about to conjure a magic, but Lupin shoots her arms.)

Lupin: I don't think so, Bitch.

Malty: (glares) You shall learn your place, scum!

Lupin: (scoffs) I'm not as merciful as Naofumi is, you know.

(Malty growls in anger and charges at Lupin, only for him to shoot her in the head.)

Lupin: Tch, bitch...

(Aultcray sees that, and angrily charges at Lupin, only for both Bumblebee and Hot Rod to push him in their alt modes, and then as he is about to get up, Tucker approaches him, and steps on his chest.)

Tucker: (glares) Hasta la vista, trash!

(Tucker beheads Aultcray, and kicks his head like a football.)

(Back to Millennium, he takes off his helmet, revealing his face to the defeated Tai, Summer and Raven.)

Raven: (shocked) No... that's impossible!

Tai: (grunts) How are you... ugh... still alive?

Zen: (scoffs) I just wanted to let you know who defeated you before killing you. And tell your cursed brats I said... (smirks) hello!

(He puts his helmet back, and prepares to finish them.)

FINAL MILLENNIAL ATTACK RIDE: M-M-M-MILLENNIUM!

(He performs a slashing kick that hits the three as they scream in anger.)

Tai: GRAAAAAH! NOOOOOOOOOOO!!!

Raven: WHY DID I HAVE TO LOOOOSE!!!

Summer: (weakly) Ruby... I failed you...

(They then explode as Millennium scoffs.)

Millennium: Good riddance.

(Spider-Man is seen dodging the attacks of Kamui Woods before shooting a web rope, and slamming him down before throwing him up.)

Spider-Man: Get ready! MAXIMUM SPIDER!

A/N: Replace Ryu with kamui Woods.

(As Spider-Man crushes Kamui Woods, he sighs in relief.)

Spider-Man: This is for you, my uncle.

(Mount Lady is about to stomp Spider-Man, but then Scorpion launches his spears at her ankles, and trips her down before jumping as he lands roughly at her head, crushing her skull. Meanwhile, Orga is seen slashing every object launched by Glynda, and then he finally decides to execute his finisher.)

READY!

EXCEED CHARGE!

(Orga stabs his sword through Glynda, who coughs blood as she is reduced to dust. All Might is fighting Soundwave, who then shoots his arms before grabbing and slamming them.)

Soundwave: Soundwave Superior, All Might Inferior!

(Back to the Fangire Riders, Kiva then sees Tatsulot approaching him.)

Tatsulot: TENSION FORTISSIMO!

(Tatsulot then attaches into Kiva's wrist, and the Rider prepares to change forms.)

HENSHIN!

(Kiva then changes to his Emperor form, and slashes several Atlas Soldiers with his Zanvat before he throws it to Dark Kiva, who picks it up and slashes some Atlas Soldiers as well. Both Kiva-La and Dark Kiva-La slash the remaining Atlas Soldiers into pieces. Zero-One is seen slashing some Pro Heroes before deciding to use another form.)

FIRE!

AUTHORISE!

PROGRISE! GIGANT FLARE! FLAMING TIGER! EXPLOSIVE POWER OF 100 BOMBS!

(Zero-One then turns to see Ochako lifting some rocks as he executes his finisher.)

FLAMING IMPACT!

(Zero-One creates a ring of fire and jumps through it, resulting in his entire body being covered in flames as he charges toward Ochako and delivers two flaming slashes with the Tiger Gauntlets as she explodes.)

Zero-One: Rest in hell.

(Back to Millennium, he is about to fight the headmasters, when suddenly a portal appears, and the League of Darkness appears.)

All For One: Well, well, well, what a nice day to see the downfall of the Hero Society, eh?

Sanemi: Great, it's the League of Darkness.

(The villains prepare to get into the fight as the screen fades out.)

(To be continued.)