Twin tails suit the young genius girl, Kotone. Due to her father's constant work, she spends most of her days living alone. However, behind her genius facade, she harbors a masochistic desire to be 'forced into deepthroating and inseminated.' One day, she is caught masturbating by a plumber, Nakata, who then blackmails her into sexual acts, causing her to fall. Since then, she has become Nakata's sex slave, being taught lewd behaviors...
