Haruna Kahoku is a new graduate editor. One day, she is put in charge of the company's signboard artist ``Kuda''. Hisada looks like a nice old man at first glance, but she is actually a lewd woman who has a strange obsession with young, voluptuous women. Unbeknownst to her, Haruna is cornered by Hisada's cunning sexual harassment. Eventually, she was made to cum over and over again by an old man who was as old as her own grandfather, and fell into her old roots...