A full-time housewife in her 16th year of marriage, she has one child, a 12-year-old daughter. Her husband is the president of a venture company and is five years older than her. Sumire Ikoma is 40 years old. Sumire says that up until now she has lived a carefree life without any inconveniences, but... "When I was younger, I never doubted how lucky I was... But ever since I reached middle age, I've felt a hunger somewhere in Kokoro that hasn't gone away... I want excitement. I want to feel thrills." Sex twice a week with her husband can't erase that hunger, so she will satisfy it until she's full.