(A young boy named Leonard Arc is seen in the cafeteria of Beacon Academy along with his teammates.)

Leonard: That's was quite a mission.

Sunset: Come on, at least nobody got hurt.

Mio: But your recklessness COULD have got us killed!

Nozomu: Leonard, is it true that you are still dating Team RWBY?

Leonard: What do you mean by "still"?

Nozomu: I felt four male scents right now. And they seem to be heading to their dorm.

Leonard: (gets up) Thanks, Nozomu. I will check it up.

(Leonard goes to the door of Team RWBY's dorm and sees something which shatters his heart. They are making out with Team SSSN.)

Sun: Blakey, what did you see in Jaune's brother anyway?

Neptune: I could ask you the same, Weiss.

Weiss: I just dated Leonard so I could get Jaune to stop hitting on me.

Neptune: Pathetic, isn't he? He didn't even know that he was being used all along.

(Then a tear falls from Leonard's eye and he goes to his room to pack his stuff.)

Leonard: I don't belong in here.

(Then he leaves a note for his teammates, and then he walks away from Beacon. As he is on his way back home, a grimm suddenly comes out of the forest.)

Leonard: Is this how I die?

????: No, Leonard. Death isn't supposed to be your fate!

Leonard: Who said that?

????: Embrace your real power.

Leonard: My real... power?

????: You are the child of the sun, Leonard Arc. You are a Kamen Rider!

(Suddenly Leonard's body starts moving on its own, and a certain word comes from his mouth.)

Leonard: Hen...shin!

(Then Leonard becomes Kamen Rider Black.)

Black: Kamen Rider! Black!

(Black starts fighting the Grimm and has some difficulties dealing with the monster until...)

Black: KINGSTONE FLASH!

(The attack blinds the Grimm, and then Black punches the Grimm in the face before jumping off.)

Black: RIDER KICK!

(Black kicks the Grimm, and then it roars in pain as he is burning before exploding. Then All Might approaches him.)

All Might: Impressive performance.

Black: Who are you?

All Might: I am All Might, the number one hero.

Black: All Might? Never hard of this name...

All Might: I am from Musutafu, and I am inviting you to join U.A. in order to become part of a future generation of heroes.

Black: Hmm... the offer is good.

(Then Black reverts to Leonard Arc.)

Leonard: My name is Leonard Arc, and I accept to join U.A.

All Might: Excellent. You can start tomorrow.

(Leonard smiles, knowing that his life is about to change.)