The answer found by my sister who wanted her brother's body was to hide her face with a mask! ! 'Mikoto', a sober and glasses-wearing younger sister, accidentally witnessed her brother's erection. My sister, who has no ties to the opposite sex, can't get the scene out of her head. The younger sister, whose sexual curiosity can no longer be suppressed, attacks her brother by disguising herself as a masked slut. Even if you hide your face with a mask, your brother will find out who 'Mikoto' is! ! Obsessed with Ji-Po and appears out of nowhere, reverse-rapes his older brother and forces him to cum inside. Even if my brother is exhausted, my sister's libido will not subside! !