In her hometown where her family had all gone to work, and during the incestuous days she spent with her mother, Hoshino Fuyuka (ROE-376)

Kenji is the second son of three brothers. To his mother, Fuyuka, he seems like a well-behaved child who doesn't need any worries… One spring, his older brother went to Tokyo to work and live alone, his younger brother also went to Tokyo through a sports recommendation, and their father also took up a new post alone. The environment surrounding Kenji and Fuyuka became busy, and their lives as a couple began. The lively family suddenly became quiet, and Fuyuka felt lonely. Kenji felt resentful and empty towards his mother, who only cared about his brothers, and longed to experience the love he had never been able to have exclusively from his mother…