A mother wearing flashy lingerie is a sign of her frustration and desire to seduce her son

Momose feels lonely because it' s been a while since he had a night life. She orders sexy lingerie in hopes of getting her husband to look at her again. Her son Ryota sees her trying on the lingerie that arrived a few days later. When Ryota finds out that his mother' s body, which he had never thought of until now, is wrapped in flashy underwear and shines at its best, he can' t hold back and attacks her.