[Fujisawa Tatsurou] Mama's Vagina Is The Best (Jukujobo no Biniku ni Meromero 5)

After discovering a porn DVD of her son, a shocked mother confronts him, and they plunge into a raw incest that leaves her impregnated, the family shattered. She then vows revenge as the son returns home to discover his own mother taken, a twisted cycle of betrayal and revenge.