Hikari, a mother of two, spends her days busy with housework and child-rearing. She's in a sexless marriage and feels attracted to the coach of her son's youth group... One day, she runs into the coach on his way back from the gym, invites him home to express her gratitude with a homemade meal, but they end up having an affair. Before she knows it, she's arranged extended childcare and is having sex for eight straight hours.
