Yuji is staying over at his friend's house. He has been interested in his friend's beautiful mother, Sana. That day, he keeps peeking at Sana's ass and chest out of the corner of his eye, but when he wakes up in the middle of the night and heads to the bathroom, Sana witnesses Sana masturbating in the bedroom, and takes a picture of the whole thing on his cell phone. The next day, Sana shows Sana the video of her masturbating to orgasm and presses for a relationship...