Ryunosuke, the supervisor, and Rei, his subordinate, from the same company. Despite both having partners, they'd been in a relationship for two years. However, Rei accepted a marriage proposal from her boyfriend. They decided to end things as her wedding and move coincided. A week before her move, they had a final date at a hotel, wanting to spend the night together. They engaged in raw sex, creampieing each other relentlessly, fulfilling their desire for a cohabiting couple experience until dawn.