Erika Mizumoto, a 31-year-old housewife. Her husband is a sports trainer, diligently maintaining his health. Though they don't yet have children, she dedicates herself fully to supporting her husband's body and their daily life as a devoted wife. Now, in the fifth year of their marriage, she reveals her hidden desires and the intimate truths of her private life, delicately portraying her innermost thoughts for the reader. Her feelings during nights with her husband and the subtle emotional shifts in everyday life are slowly unfolded. An authentic story diving deep into a wife's sexuality and love—raw, real, and deeply personal.