A housewife married for 20 years leading a mundane life. Lately, she feels her heart growing colder with age... She longs for passionate sex that makes her heart race with just a kiss, like when she was a teenager. She wants to experience a fiery affair, with a one-day-only boyfriend, culminating in her first and last creampie sex. Karen, 43 years old, living in Shinjuku Ward, with one child.