Yamete, oshiri ga itai's manga / #hacker(1)

Perfect Education

Complete | Narita Haruno | 2000 released

Yakuza Hasegawa Takiji runs some kind of dating scam and one day his system gets hacked by a teenager named Fushimoto, who because he has trouble remembering faces has distanced himself from all people even to the point where he doesn't like to be touched. So, instead of torturing him normally Taki screws him. Not a pleasant story but interesting characters.