Can I call you my brother?

Basically I wanted kaigaku and Zenitsu to have a brotherly relationship, and NO ONE has done it yet ig so here I am
This will be a well written fic because I don't want it to just be like 1 chapter and that's it. No.

😀 if you know me irl no you don't ignore this- IM LOOKING AT YOU HAYLI💀 GO AWAY-jk read it if you want. Demon slayer does NOT belong to me!