That JAV

First in the "sachiko" series! A female student 'SACHIKO' has been truant from school for half a month. Her homeroom teacher, Yuji Oiwa, visits her home, harboring ill feelings toward her. There, he finds Sachiko, who is in a "troubled situation".... A teacher attacks a student in a house with a disturbing atmosphere. Sachiko's moans echo through the house, and she falls into the darkness of pleasure that she cannot escape.... Innocent, authentic SM bondage drama.