Dokyuu Hentai HxEros S01E11 - Bye-bye, HXEROS!

A fierce man who defeated KiseiChu without difficulty, but ate the poisonous stinger released when the opponent was killed. Retto felt it wasn't a big deal, but for a moment, a cute stoat popped out of my pants!  The true identity of the Kisei bug was the NyotaikaChuu bug that gradually femalized the stabbed opponent, and the stoat that escaped was the "source of the man" of the fierce man.  If you don't catch it early, your body will become completely female and irreversible.