[Reducing Mosaic]ROE-151 Days of incest with my mother in the family home after everyone has left the nest―. Yumi Anno

Born as the second son of three brothers, Tatsuya. To his mother Yumi, he seemed like a quiet child who didn't assert himself... One spring, his older brother got a job and moved out, while his younger brother entered a boarding school on a sports recommendation. His father was transferred to a single posting, and life suddenly changed, leaving Yumi living alone with her son. The once lively home became quiet, and Yumi felt a sense of loss. Seeing his mother like this, Tatsuya felt an inexplicable jealousy and tried to regain the maternal love he had never exclusively possessed...