It can also be sexual abuse. The Male MC must go through it or be saved from it either by his heroine or his bestie. This should be traumatic for him. The manga can have slight BL subtext. Romance is fine. It would be better if it's focused on friendship or psychological issues.

The setting can be dark or comedic. But the seriousness here would be better.

Plz HELP. I've searched for forums and under various tags but couldn't find any. I hope to get a few manga here. 🙂 😃 😢 😢

Berserk -

Guts was raped by his adopted father as a child.

Banana Fish, definitely.