Not sure if anyones ever read this. But im looking for this old romance/harem manga that was about this guy who has a shutin personality and doesnt really understand girls. He goes out with his friends to like a cafe. One of the girls ask him to go out with her for like a certain period of time. But later on he discovers that she went to school with him a long time ago but she had emotionally scarred him. In the past they were good friends but one of her friends had like him so they made this scheme up to where if she got rejected it will look like a prank. However the prank ended up traumatising him.

Renai Shimasen Ka?... not exactly "old" though.

~4400 manga completed
~1700 ongoing...

Thats it!!!! Thanks!!