[29th day of abstinence...] After abstaining from masturbation for a month, I promised to have the most enjoyable sex, but even after giving in to her sister's reverse NTR seduction, she couldn't stop using up a box of condoms and had raw sex again and again.

After seeing an article saying, "Sex after abstinence for a month feels amazing!", she was forced to masturbate, but that day the temptation began by her younger sister Mito. He seems to be interested in me, but normally he lightly wears his hair, but he is aroused by abstinence and can't take his eyes off his panties and breasts. No, no, I have a girlfriend...but when I was about to end abstinence in just one day, "If I put on a condom, I won't be cheating on you♪" That was so convenient that I lost my rationality, and I ended up using up my J-type body until I've used up all the boxes! However, her slaughtering sexual desire never stops and she enters forbidden raw sex!