"Your brother alone can't satisfy you, can you?" A J-cup housewife neglected by her indifferent husband. An NTR documentary about her being spied on by her stepson while masturbating late at night, leading her to fall into an abyss of pleasure. (Marina Hyakuno, NACT-209)

Marina, a married woman with an enviable J-cup bust, is not seen as a woman by her husband. Facing a husband who is indifferent to their nightlife, her unsatisfied desires grow. One day, she is caught masturbating alone by her live-in stepsister. Caught in the act, she is gradually drawn to the young, strong masculinity, experiencing unknown, intense pleasure. She becomes unable to be satisfied without her stepsister's penis, eventually even actively swaying her hips, completely degenerating into a NTR (Netorare) drama of a lustful female!