(A young boy is seen walking in the streets of New York. His name is Sento Aizawa. He suddenly notices a ruckus close to a cafe.)

Sento: Tch, it looks like I'm gonna have to do something about those four.

(Then the Sasword Zecter comes to Sento.)

Sento: Henshin!

HENSHIN!

(Sento becomes Kamen Rider Sasword, and then he arrives in time to prevent a blonde huntress from punching a waiter.)

Sasword: Even I can't believe I managed to shield him in time.

Weiss: Who are you, dunce?

Sasword: Heroes pretending to be like you don't deserve to know my true identity. Now prepare for a world of pain. CAST OFF!

CAST OFF! CHANGE SCORPION!

(Sasword changes forms.)

Sasword: Much better. You better be ready, because I won't hold back!

Weiss: You're outnumbered. You can't win. Give it up.

Sasword: HAHAHAHAHA! Do I look like I care about numbers? Besides snobbish, you're dumb. Clock Up!

CLOCK UP!

(Everything slows down, and then Sasword lands some slashes at Weiss, then on Yang, next on Blake, and last on Ruby.)

CLOCK OVER!

(Then Team RWBY feels the slashes hitting them, and they fall on their knees.)

Weiss: Ugh, how did you do that?

Sasword: Sorry, that's my little secret.

Weiss: We'll find a way.

Sasword: That's funny to hear, because... you're the only one still standing. Look.

(Weiss sees her teammates already down, and decides to summon her ice knight.)

Sasword: So bringing up big guns, huh? At least, you're making this a little more interesting to me.

(Then Sasword clashes his sword with Weiss' Ice Knight various times until Sasword dodges the ice knight's next swing before destroying it.)

Weiss: (scared) No, I am a Schnee.

Sasword: Your name doesn't matter to me. And you brought this on yourselves when your teammate tried to punch a poor waiter. RIDER SLASH!

RIDER SLASH

(Sasword slashes Weiss, killing her.)

Waiter: Thank you, whoever you are.

Sasword: I am the protector of mankind and the god of death for the wicked in the dark... Poison Scorpion Swordsman: Sasword!

(Then Sasword walks into an alley before reverting his transformation. Suddenly a male voice is heard.)

????: Are you done, son?

(Sento turns to see his parents, Shota Aizawa and Emi Fukukado, both retired Pro Heroes.)

Sento: I left my mark on some of my former colleagues.

Shota: You're lucky they didn't find out about you.

Sento: They wouldn't bother. Likes of them are too busy doing what the Union Headmasters order them to do.

Emi: Well, that makes sense.

(Then they leave as the screen fades out.)