As the title says, I'm trying to find a oneshot I read quite a while ago but never saved, I know how the story goes but I can't for the life of me remember the name. Here's how it goes:

The MC is a boxer, though he has never won any matches, and due to him dedicating all his time to boxing his girlfriend broke up with him. He meets her again after some years pass and is still in love with her so he invites her to see his last match as a boxer telling her that if he wins he wants to tell her something/confess. She shows up for the match and of course he loses, so then he packs up all his stuff and goes to her house to leave a letter on her doorstep before he presumably leaves town. The girlfriend opens the door as he's about to leave and they reconcile.

Would really appreciate any help so I can find and read this oneshot again (≧▽≦) ♡