Kittsui Seikaku no Kyouiku Mama ga, Jukenki Nomi Kurayami no Naka Nomi to Iu Jouken de Musuko no Sex Dairizuma o Tsutomeru Hanashi.

Alternative

The Tale of a Cold, Helicopter Mother Who Agrees to Act as Her Son's Surrogate Woman to Help Him Focus on Studying! | きっつい性格の教育ママが、受験期のみ暗闇の中のみという条件で息子のセックス代理妻を務める話。