(Tokuro is seen at his new house as Daiki shows him a dimensional transporter.)
Daiki: With this thing, you can travel around every universe.
Tokuro: Cool.
Daiki: As Kamen Rider Diend, I believe it's your turn to have some adventures in each universe. There are five universes you can visit. Hazbin Hotel, My Hero Academia, Highschool DXD, Symphogear and RWBY. In each universe, you can have a treasure to steal, a world to save, girls to attract, and above all, villains to destroy. Are you ready for this, son?
Tokuro: I am.
(Then Tokuro enters in Hazbin Hotel/Helluva Boss universe.)
Tokuro: So this is hell... not much hellish... anyway.
(Then Tokuro sees some Egg Bois launching themselves in a building, exploding it.)
Tokuro: I take it back. (pulls out a card) Henshin!
Diendriver: Kamen Ride: Diend!
(Then Tokuro transforms into Kamen Rider Diend)
Diend: Okay, Let's go.
(Then he shoots down some of the Egg Bois.)
Egg Boi 1: Who is this guy?
Egg Boi 2: We should warn our boss.
Diend: (pulls out a card) I don't think so.
Diendriver: Kamen Ride: Gai.
(Then Kamen Rider Gai is summoned)
Egg Boi 3: Regroup! Regroup!
(Kamen Rider Gai hits some of them with his thrush while Kamen Rider Diend shoots others.)
Diend: Now to finish you all! (pulls out another card)
Diendriver: Final Attack Ride: D-D-Diend!
(Then Kamen Rider Diend destroys all of the Egg Bois with his shoot.)
Diend: That's all of them.
(Suddenly a girl comes in.)
????: Amazing. That was incredible.
Diend: Thanks. Who are you?
????: My name is Octavia Goetia.
Diend: I'm Tokuro Zankoku, also known as Kamen Rider Diend.
Octavia: I like you.
(Suddenly a machine comes out of the ground.)
Octavia: Oh no.
Diend: A machine? In hell?
Octavia: It could only be Sir Pentious.
Diend: Sir Pentious?
Octavia: He's the worst sinner around here. He also seeks to conquer the entire hell.
Diend: (pulls out two cards) I will stop him.
Pentious: Who are you to defy the great Sir Pentious?
Diend: I'm just a passing-through Kamen Rider. Remember that.
Diendriver: Kamen Ride: Odin! Kamen Ride: Tiger!
(Then Kamen Rider Odin and Kamen Rider Tiger are summoned)
Pentious: Really? Summoning people?
Diend: I still have more tricks. (pulls out another card)
Diendriver: Attack Ride: Illusion.
(Then Diend multiplies into three.)
Pentious: I will crush you!
(Then Sir Pentious tries to crush the five with his machine, but they dodge. Kamen Rider Diend pulls another card.)
Diendriver: Attack Ride: Blast!
(Then the three Diends shoot Sir Pentious' Machine, damaging it along with Kamen Rider Odin and Kamen Rider Tiger's attacks.)
Diend: See you never, demon.
(Kamen Rider Diend pulls out his Final Attack Ride Card and inserts it on his Diendriver.)
Diendriver: Final Attack Ride: D-D-Diend!
(Then Diend shoots Sir Pentious down, killing him.)
Octavia: Oh, you're so cool.
Diend: Thanks, Octavia.
Octavia: You're welcome, Tokuro.
(Then a laughter is heard.)
Octavia: (sighs) Great, it's the Radio Demon.
(Then Alastor comes in along with Charlie and Vaggie.)
Alastor: Now that's entertainment. Something unlike any other. Good VS Evil in hell.
Charlie: Hey, you're a guy seeking redemption.
Diend: Nope, I'm just a passing through Kamen Rider. Remember that.
Octavia: Hey, Tokuro. Can I ask you something?
Diend: What is it?
Octavia: Could you spend a night with me?
Diend: Where could I live?
Charlie: You can live in our hotel.
Vaggie: Is this serious, Charlie?
Charlie: Of course. I always believe in goodness in the worst of the worst. You know that, Vaggie.
Diend: Well, I guess I can spend some time here.
(Then they go to the hotel as the screen fades out.)