Maki marries the first man she has sex with-- Koichi, from her university's drama club. Yet, in their seventh year of marriage they are sexless and without a child. Koichi works over-hours as a high school teacher and Maki diligently does anything and everything to support him. However, Yamate, who just came home from Brazil, pulls her heart strings with a sudden kiss. Only on Maki's thirty second birthday does she find out that her hormonal instincts as a woman are far different from the feeling she's had by simply fulfilling her daily duties and chores at home for her husband.