母親の筆下ろし性教育が義務化された世界 母に許されているのは１度きりの童貞喪失SEX！正しい性知識を教えるだけのはずだったのに…旦那よりも元気な息子チ◯ポにハマり禁断の母子相姦で快楽堕ち!!

In a world where mothers are obligated to take their son's virginity in sex education, mothers are only allowed to lose their virginity once! They were only supposed to teach him the correct sexual knowledge, but... she got hooked on her son's dick, which is more energetic than her husband's, and fell into the pleasure of forbidden mother-son incest!!