>>280814372
The Golden Boy mangas last arc.

After where the anime drops off Kintaro becomes a yakuza AV star whose performance is so outstanding that he becomes a legend that women line up to get fucked by him because he can give anyone mindshattering orgasms. Later on he meets his old University rival who wants to create his own country(cult) underground where the grabbing point is its a massive orgy. Theres a few other details in there too(Like some reverse NTR plot)but ultimately this whole damn story ends on a cliffhanger because the mangaka got axed