[ROE-542] At her parents' home, where the whole family had left the nest, she spent her days of incest with her mother. Nagamine Tsubaki

Kenji was born as the second son among three siblings. From the mother's perspective, Tsubaki seemed like a child who was easy to handle... One spring, the older brother got a job and started living alone, while the younger brother enrolled in a boarding school. Her father moved away for work alone, and life changed hecticly, leading to a life of just Kenji and Tsubaki, a mother and son. The once lively house suddenly becomes quiet, and Tsubaki feels a sense of loss... Seeing his mother like this, Kenji feels frustrated and empty at worrying only about his siblings, and tries to monopolize his mother's affection...