I've been looking for it for more than a year.

It's a comic in which is a huge muscular black haired man in a karate outfit fucks and is fucked by a younger blonde guy.

They are both training for karate or something and end up having sex and the cover is something like this:
(The blonde guy is covering the ass of the big one so we can't see it)

I saw it uploaded once to MyReadingManga but it got removed and I don't even remember the name, pls help!