BBAN-528 A devilish junior colleague who missed the last train breaks up her masturbation routine, and the boss who is crazy about masturbation repeats lesbian orgasms as her body becomes sensitive after abstinence from sharing a room with a slutty woman.

Aya, a career woman working for a major company, is well-liked in the company and is always smiling, so people around her think she is a calm person, but in reality she has such a strong libido that she cannot maintain her ego without masturbating. A frustrated monster of insatiable sexual desire, created by years of brainwashing, is suddenly visited by Himari, a junior at work who missed the last train, and is half-forced to stay over... Aya was able to hold back from masturbating due to the sudden, unannounced, abstinence from sharing a room, but she gradually loses her reason and starts masturbating with her junior's personal belongings...