The Big Villain Is Fixing the Plot Again Today

Kibutsuji Muzan: ...Does this medicine really work? Bai Mang: It sure does~ After happily getting smashed to death, I turned around and, holy crap, Muzan, how did you get your head blown off by a maid? Who's going to be the BOSS now?!! [And so, Bai Mang became Muzan.] Midoriya Izuku, barely breathing: Kacchan was right. Someone like me should just die. Bai Mang: ??? Weren't we promised an uplifting, passionate battle series? Aaaaaa, stop talking! You're practically dead already! Aaaaaa!! [And so, Bai Mang turned Izuku into a demon.] Saiki Kusuo, raising a hand: [So it was you who was sending asteroids toward Earth...] Bai Mang: qqssdffdkver@#$% I won't do it again... [Please note] This is my first work. The writing is bad. It won't be published for payment, and I won't abandon it. Theme: Stay optimistic