Masato, who has been in a single-father family since he was a child, has a crush on his friend's mother, Yuri. Masato can't talk to anyone about her feelings, and finally consults her, who is her crush. Yuri teaches her masturbation to him, who has no sexual knowledge, "It's a secret to anyone." Unable to suppress her reason for her first pleasure, Masato pushes Yuri down. Her body, which has not been connected to her husband for a long time, cums over and over again with his reckless piston that violently gouges her vaginal wall.
