On an ordinary morning, Kevin coser just stepped out of the house when his vision went dark. When he woke up again...

System: Congratulations, you have traveled through time.

Kevin coser:...Ah?

System: And your cosplay came true, and you became Kevin.

Kevin coser: cool～

System: The good news is that you didn’t travel to the Honkai Impact 3rd world.

Kevin coser: What about the bad news?

System: You can't go back to your original world. So...

Kevin coser:?

System: Come save the world with me!

Kevin coser: This is too sloppy!

All in all, it’s a story about a hapless kid who saves the world after his cosplay comes true.

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Pre-view reminder:

1. The person cosplaying is not Kevin himself, and I have never played Honkai Impact 3rd. My understanding of Kevin comes from Bilibili. Please forgive me for the imprecise settings.

2. Character ooc warning!

3. A self-inflicted work, Kevin COSER travels through time and space to curse back + Wen Ye + tutor, not involving Honkai Impact 3rd.