One day, Rena, a new teacher, visited the students in her class. - However, as soon as the student welcomes Rena, he makes her drink tea containing a coma-inducing agent and lays her out. - The father of the semi-gray student who appeared in the middle of the act also intervened and was thoroughly fucked. - That night, when the black money dealers who had lent money to her father come, her father proposes that they offer Rena's body as a form of debt and let them do whatever they want. - Eventually, Rena becomes a lewd woman who accepts everything from vaginal ejaculation to facial ejaculation...