Jinsei Gyakuten: Uwakisare, Enzai wo Kiserareta Orega, Gakuenichi no Bishoujo ni Natsukareru

At the end of summer, Eiji Aono witnesses his childhood friend and girlfriend, Miyuki Amada, cheating on him with Kondo, the ace of the soccer team. When Eiji arrives at school after the vacation break, he is met with a barrage of unsavory rumors. "He is a terrible person." "He gets violent, too....

Source: MyAnimeList