Cosplay Transmigration to Save the World

Cosplay Transmigration to Save the World

On the way to a comic convention with the members of my club, I was inexplicably bound to a "Corruption Extermination" System. It wants me to transmigrate through various worlds and exterminate the Corruptors.

Me: ...Exterminate? Are you sure this isn't the Jujutsu Kaisen set?

System: It's really not! I'm an intelligent AI from thousands of years in the future. If a timeline jump hadn't gone wrong and bound me to your club... Aaaah, we're doomed! The world is definitely going to be destroyed, isn't it?

Me: So I'm not the only one. Seriously, what worlds are you sending us to?

System: Bungo Stray Dogs, Jujutsu Kaisen, and maybe even ordinary worlds... Lots of them!

Me: Can you unbind me? I'm not doing this.

System: I can't. Sob... How about I grant each of you one wish you can reasonably fulfill every time you transmigrate to another worldline?

Me: ... :)

I silently glanced at the Genshin Impact Zhongli cosplay I was wearing, and the next second I was teleported to another world.

System: WTF, it's a low-dimensional reality world! How are you so unlucky?

And so, another ordinary world saw Zhongli from the Genshin Impact world inexplicably appear in real life, expressionlessly chasing a bunch of bizarre creatures. Behind him, Satoru Gojo was clapping and enjoying the chaos, while Osamu Dazai stood nearby taking pictures.

Wait, how did those three end up together? The dimensional wall has shattered! Aaaah!

Me: Thanks for asking. Satoru Gojo is our vice president. He used to be a pretty quiet boy, but who knew that after his synchronization rate reached only thirty percent, he'd turn into such a jerk. Osamu Dazai is our president, a reincarnated sludge monster. I don't think it matters whether his synchronization rate is activated or not. Honestly, if you don't keep him in line for three days, he'll climb onto the roof. :)

President: That's slander! I love life, okay?

Vice President: Osamu Dazai, who loves life, and Satoru Gojo, quiet and polite? Are you telling ghost stories?

The club members transmigrate along the same worldline in student ID order, and each cosplays a character from a different series. So you might see Zhongli from Genshin Impact having tea with Fu Hua from Honkai Impact 3rd, Osamu Dazai from Bungo Stray Dogs causing trouble with Satoru Gojo from Jujutsu Kaisen, or Jinpei Matsuda from Detective Conan and Oda Sakunosuke from Bungo Stray Dogs going shopping and defusing bombs...

Me: The System gave us pain suppression, mental communication, a system shop, and combat abilities for free. We can always just treat this like a full-dive game. (Exhausted.)

Characters from other series may appear too (such as the DC or Marvel Universes? Anyway, I should get around to writing them, but it'll be much later).

Theme: We understand the big deal about saving the world, too.