The masterpiece of mother-son incest by 'Natsume Benkei' Sensei's popular series is finally realized in live-action! It's only natural for an educational mom to lecture and scold to make her child study hard, but she ends up taking care of his sexual desires as a duty... As long as the rules are followed, he can fuck and cum inside every day! During sex, she doesn't show her face and suppresses her moans, only from behind... But due to the relentless piston-like thrusts and internal ejaculation of an adolescent's insatiable dick, she unintentionally feels pleasure and gradually becomes lewd, climaxing! Situations where he fantasizes about his mom being a slut while using his realistically enjoyed pussy, or scenarios where she allows more than just doggy style after cumming repeatedly in the "sex above duty"...!?
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