Yui, a wealthy female student whose father is the president of a top-tier company. Due to her father's constant work, she spends most days living alone, but behind her facade as an honor student, she harbors a masochistic desire to be attacked by men. One day, she is caught masturbating by a delivery man, Naka, and is coerced into sexual acts. Since then, she has become Naka's sex slave●, being taught various lewd behaviors…
