My little sister, who has always been serious and studious since she was young, is actually a horny high school girl! From casual conversation, it somehow turned into dirty talk, and the atmosphere became weird… I thought she would feel awkward, but she reacted to the dirty talk and wanted to have sex! When I said 'You'll never make me hard,' she got stubborn and insisted on making me erect, even taking off my pants. Once she started sucking, she wouldn't let go until I got hard and said 'Let's have sex'!
