Since early childhood, Yuta has felt a strong attraction toward his aunt Kaori. But to Kaori, he has always remained just her beloved nephew. Even when he accidentally peeks at her in the bathroom, she acts as if nothing happened. After her bath, she walks out wrapped only in a thin towel, fully exposing her naked body. Her vulnerable appearance shatters Yuta's self-control, and driven by overwhelming desire, he pulls Kaori into his arms. Through intense kissing and passionate touching, Kaori realizes she's being desired as a woman, and a forbidden relationship begins to bloom between them.