My sister, who was supposed to love only me forever. And then she suddenly says she has a boyfriend. What a troublesome thing to say. Because my sister is mine forever, and some unknown guy touching her is absolutely unacceptable... I reflected on this and restrained my sleeping sister's limbs to the bed! For some reason, my sister looks scared, but of course her heart and body will be dominated by pleasure! I decided to properly educate her so that she'll never show interest in another man again.
