31 consecutive days after work, the office sex breaks down. A man and woman on the verge of working for a black company.

Marika works at a small advertising agency and is busy with hard work every day. Suzuki, a new graduate who works in the same office as her, also spent his days as a corporate slave. The phone calls that kept ringing, the documents piling up, and the harsh work that made it difficult to get home has spanned 31 consecutive jobs... And while working overtime late at night, Suzuki, whose normal judgment has disappeared, ends up attacking Marika in a state of insecurity. And then, Marika, who was on the verge of reaching her limit, ends up drowning in pleasure as she penetrates her deep vagina for the first time in a while...