Responses
Was it this?
http://www.mangago.zone/read-manga/bitter_virgin/
Yes that's it! Thanks so much (づ￣ ³￣)づ
It is a seinen manga about a young girl raped by her stepdad. The ML accidentally heard of the FL's confession of the raped because he went into a confessional box.
Please help me find it. I read this years ago and is one of my faves, I just forgot its title. Thank you