(Kamen Rider Tycoon is seen preparing to fight the three villains as Dabi shoots some fireballs at him, but he dodges them all.)

Tycoon: What's wrong? Can't make a hit?

Dabi: Why you...

(The three villains charge at Tycoon, who then runs from them.)

Ochako: What is he doing?

Tsuyu: He's playing as a bait.

Izuku: He seems like a nice guy.

(Dabi finally lands a hit on Tycoon, but then the Kamen Rider uses a substitution jutsu.)

Dabi: (shocked) What?

TACTICAL SLASH!

(Tycoon sends a green energy slash, hitting Dabi and bringing him down.)

IIda: What just happened?

Izuku: He used a ninja trick. The way of shinobi... is to accomplish your mission even if you have to sacrifice yourself.

Tycoon: I'm not gonna fall.

(Dabi gets up and angrily throws more fireballs, but Tycoon quickly dodges them all and pulls out the Boost Raise Buckle.)

SET!

DUAL ON! NINJA & BOOST!

READY, FIGHT!

(Tycoon changes forms and charges at Dabi.)

Tycoon: Prepare yourself!

(Dabi shoots more fireballs, but Tycoon deflects them all and changes his blades to a single one.)

SINGLE BLADE!

(Then he prepares to finish Dabi.)

BOOST TIME!

(Tycoon stands on the Ninja Dueler as it spins.)

NINJA BOOST GRAND VICTORY!

(Tycoon  jumps off, and extends his right foot, while green energy surrounds it, with the Boost Kicker activating, and his emblem appears in front. As the kick hits through Dabi, the villain screams in pain before exploding.)

Twice: DABI, NOOOOOO!

(Then Kurogiri comes in and glares at Tycoon.)

Kurogiri: You will regret this!

(Twice and Toga retreat through the portal as Toga winks at Izuku.)

Tycoon: (comes in) That was too easy.

(Tycoon reverts back to Ryuga and Izuku speaks to him.)

Izuku: You're really awesome, you know.

Momo: Who are you?

Ryuga: I am Ryuga Tatsuma-Sakurai.

Fumikage: Tatsuma? What does this name remind me of?

????: It was a very risky move, son.

(Everyone turns to see Ryuko Tatsuma, the Pro Hero Ryukyu.)

Ryuga: Oh, you know me, mom.

Izuku: Ryukyu, your son did a great job today.

Ryuga: (smiles) It's not like you to say something like this, Izuku. Saving the world isn't easy.

(The last scene shows the moon shining in the sky as the screen fades out.)