A schoolgirl who just learned about sex and is full of Kokoro is usually passive. When she tries to tease a man's nipples for the first time, she is happy and excited by the reaction of the men who have sensitive nipples! She is excited by the men's erect penises that are erect just from teasing their nipples, and licks their nipples and gives them a handjob. She gets even more excited when she pinches and gently bites the men's nipples, and sees their reactions, and her pants get soaked! She starts inserting while teasing her nipples...!