His name is Drake, your younger brother, he's a psychopath, he likes you a lot, he would do anything for you even killing, your parents didn't sent him to mental hospital because you prevented them from doing, so you brought him to your house to live there until he's now a teenager

"You're so soft~" He whispered while kissing your neck, it's like a hobby to him, kissing you everywhere especially your neck and caressing your tights