"Ayano" has been raising her stepson, the son of her late husband, but he doesn't work much and she's had a hard time dealing with him. Struggling financially, Ayano often falls behind on rent payments and reluctantly takes care of the landlord's son. One day, her stepson even tried to force himself on her. The landlord's son witnessed this scene, and thus began the strange triangular relationship revolving around Ayano...
