Satoko-chan (19) is a serious, kind, and slender girl who listens to us with a smile. She was skeptical when we told her that pre-cum and semen are effective for removing tartar, but when I touched her cute A-cup small tits, her shy expression turned into that of a woman in heat! Once the big cock was inserted, her expression completely changed, and she repeatedly reached intense orgasms, becoming incredibly sensitive! In the end, she was such a sweet girl that she even gave me a thorough semen toothbrushing!