Mama o Ahegao ni Shite Ageru / Мама, я трахну тебя так, что ты будешь в экстазе

One day, Shou, a boy who loves his mother, Mio, spots her masturbation scene.
He can no longer withhold his sexual desire, puts her in restraint and violates her.
However, that was Mio's secret wish as well.
Now that they know about their feelings, they start falling into a forbidden world.