Ichika, a wife who married a man with a stepson and helps run his coffee shop, leads a peaceful life. However, her stepson Seii couldn't control his feelings for her and demanded her body. Ichika managed to get out of the situation by performing oral sex, but Seii, unable to let go, left home. A year later, Seii returns to live with them again due to unemployment. 'Can we interact as a family?' Ichika feels anxious, and suddenly tragedy strikes...
