Official English Translation on Renta
A Japanese Brazilian top X shy Japanese bottom
Leo and Kuro grew up together. After deciding to follow the same path as adults, they ended up becoming M.M.A. rivals in the ring. Kuro, who just can't get a win against Leo inside or outside the ring, has to do whatever Leo asks as punishment... which usually leads to the bedroom. Nevertheless, Kuro is still too stubborn to accept Leo's love. His body, however, has no problem taking it!
It's Mikumo's latest hot and steamy story: a battle between two M.M.A. fighters that always leads to one being K.O.ed in bed!
9 Chapters (Complete)

No real character development. The relationship moves forward through sex. No actual story, it is just eromanga. If two dudes in a pro wrestling setting getting their rocks off together isn't what you're looking for, move on. (It is mine though)