My father remarried and decided to live with my new mother's daughter.Excited to see my father and mother-in-law having sex in the bath.She grabbed an erection and said, "You can't get an erection even though you're a brother and sister."I'm excited when I fix the vibrator that I hid in her sister's room with an insertion panty and make her deep throat.Is it tsundere and de M?If this happens, I have no choice but to have incest.We're not related by blood, so it's okay, but I'll ejaculate in my mouth just in case.