When Mayu first joined the company, she was assigned to work under Oki. However, as time passed, their positions reversed. Mayu was promoted, and her former boss became her subordinate. Every time she came to work, she experienced humiliation... She lost face and drowned herself in alcohol. When Oki finally reprimanded her for her work attitude, he became enraged and raped Mayu as if to vent his frustration. However, Mayu still worried about Oki, who had once looked after her...