After being told by his friend Himori, "Isn't your mother so beautiful?", Takuro began to become conscious of his mother. Seeing her unprotected, such as wrapped in a towel after bathing, further strengthened her romantic feelings. When his father went on a long business trip, he boldly confessed to his mother, but he was easily carried away but could not control his feelings, and day by day he brought up his mother's likes and dislikes. One day, she got angry when she saw her masturbating in her mother's pants.