Sumire lives with her husband and son Koichi. Her son stole violet underwear and masturbated while looking at her pictures was her daily routine. One day, Sumire witnesses the scene and she looks into it. She asks, "Why are you doing that when you look at your mom's picture?" She confesses, "She wants to be a mom, she's always liked it." Her mother, who has been approached by her son for a month, can't stand it and crosses the line with her son.