Eien Ni Korosare Tsuzukeru Natsu

Eien Ni Korosare Tsuzukeru Natsu manga summary: High School Girl Shinku and her childhood friend Hiroki were attacked and murdered by a mysterious man after school one day. Believing themselves to be dead, they are surprised when they suddenly wake up and it's the morning of that fateful day again. Now armed with the knowledge of the day's events, the teens will repeatedly struggle to change their fate.