My good friend, my little sister, who I can talk to about anything, shyly asked me to watch her cum because she was scared to cum alone! As I was confused, my little sister started to touch her crotch and started to feel it, releasing the sexual desire that had been building up in her cumming state until now, which had been hesitant to cum until now! She was so happy that she spread her legs in a V shape and came explosively! But then she wanted a dick and begged me! Unable to resist, I stuck my dick in her and she came with her legs spread in a V shape!