Jaa, Kimi No Kawari Ni Korosou Ka?

Jaa, Kimi no Kawari ni Korosou ka? : The manga centers on Yūma Fujikura, a constantly bullied first year high school student. When a classmate named Ryō Ameri, nicknamed Amelie, helps him out one day, Yūma tells him not to get any more involved, or else the bullies will target