FTHTD-208 Kokoro Ayase, Hinano Minami

The younger sister discovers her older sister's boyfriend's disturbing sexual fetishes. While doing laundry, she sees semen splattered on her panties, sending her fantasies into overdrive. Unable to resist, she secretly tries to seduce him with a panty flash, crossing the line while her sister is away for a highly fetishistic reverse NTR sex encounter! However, her sister finds out, and amidst a whirlwind of guilt and lust, the three of them spiral into a situation from which there is no turning back!