Sayaka Minami is a 30-year-old woman with zero experience in love who has been secretly harboring a crush on her childhood friend, Ryosuke Sagisawa, for 15 years. Her life takes a surreal turn when she wakes up one morning with no memory of the past three months. To her shock, she discovers she is living with a handsome, cynical man named Sho Machida, and she has undergone a complete transformation in style and personality. As Sayaka attempts to piece together the missing months, she finds herself caught in a complicated love triangle between her long-time crush and the mysterious man she is now cohabitating with. The series explores themes of self-discovery, the courage to change, and the unpredictable nature of romance as Sayaka navigates her reclaimed life while trying to uncover the truth behind her sudden memory loss and the unexpected bond she formed with Sho.