Gibo no Chikuiki Sennou de Monogokoro Tsuku Mae kara Hiwai Chikubi ni Sodaterare... Konekuri Nenchaku Chikubi Akume de Risei Buttobi Rezu Ochi suru Kyonyuu Bishoujo

Original title: 義母のチクイキ洗脳で物心つく前から卑猥乳首に育てられ… こねくり粘着乳首アクメで理性ぶっ飛びレズ堕ちする巨乳美少女。

Shiori grew up in a single-parent household since childhood, but one day her mother revealed she is a lesbian and decided to marry Yui, also a lesbian. When she was young, Shiori thought it was normal, but as the years passed, she began to feel discomfort about marriage between women. When she asks Yui why she married her mother, the answer she receives is something she cannot comprehend...