"Can I take a bath with you, big brother?" When your sister wants to take a bath with you, it's a good sign that she wants to have sex with you. In front of his innocent sister's body with tan lines, the brother gives in to his carnal desire and finally commits the taboo of incest. The brother gives in to his Kokoro and repeatedly ejaculates into his sister's vagina, which pleasurably asks for sex, and before he knows it, he longs for her every time they take a bath.