After being told by his friend Himori, "Your mother is too beautiful, isn't she?", Takuro becomes conscious of his mother. When he sees a defenseless figure, such as wearing a bath towel after taking a bath, his romantic feelings grow stronger. When his father is away on a long business trip, he dares to confess to her mother, but he is easily swept away, but he can't control her feelings, and then he appeals to his likes and likes every day. One day, I get angry when I see her masturbating in her mother's pants.