Yamete, oshiri ga itai's manga / #Undercover(2)

Shimojou can have whatever he wants but deep down finds life boring. Constantly searching for a thrill, he wanders off the path of an elite and descends into life as a yakuza-like lowlife. Nonetheless, he moves forward as if life were an easy game. Then one day, he comes across a man who's a filthy piece of garbage. This is the man, who during their youth, was the only person who has given Shimojou the taste of defeat

Our lovely couple (not quite the couple yet in here) find each other in AV making. So same old Gin chan's S talk goes on with Hijikata being I say no but my body says yes stuff.