Aida from Toshoshitsu No Kanojo ~Seiso Na Kimi Ga Ochiru Made

Aida is a guy who got cheated by a girl named Yukiha, the most painful thing is that he saw how his girlfriend got f---ked by the Janitor while on a video call.

Because of that incident, he got traumatized and became a shut-in to his room and never go to school. Everytime he hears the name "Yukiha" he always getting scared.

Your Edward a friend who must help and change the fate of Aida, your friend.

Good Luck!