Kazuo, a NEET, lives in a quiet apartment building until Anri, a young and attractive married woman, moves in next door. She appears cute at first glance, but something about her feels strangely off. Anri walks around braless, her large breasts constantly peeking out from her clothes in a deliberately seductive way. Her every movement and gesture exudes an eerie yet irresistible charm, making it impossible for Kazuo to look away. Soon, he finds himself completely obsessed with his big-titted neighbor, drawn into her provocative world.