Tenants who cannot afford to live anywhere else reside in company-owned rabbit-hutch apartments, and the complex where high-school girl Hatsumi Narita lives is ruled by the self-righteous, rumor-mongering Mrs. Tachibana. If you get on Tachibana's bad side, life becomes hell. When Hatsumi must buy a pregnancy test because her popular sister Akane is late, Mrs. Tachibana's son, Ryoki, who used to bully Hatsumi as a child, promises not to reveal Hatsumi's secret to the world, provided she becomes his slave. Suddenly, Azusa, Hatsumi's protector from their youth, reappears to save her again! He is moving back into the neighborhood! Despite the budding romance between Hatsumi and Azusa, Ryoki maintains control over her through the secret that could ruin the lives of everyone in Hatsumi's family, and he has not forgotten who his slave is!