Suzu, a hairdresser, becomes a different person before her period. She becomes depressed, and her negative emotional ups and downs such as anxiety, anger, loneliness, hopelessness, and sadness suddenly become intense, sometimes making her unable to control her emotions. These were the symptoms of PMDD (premenstrual dysphoric mood disorder), which was recognized as a "disease" by the American Psychiatric Association in 2013. Keiko Morishita, a specialist in PMDD, has been helping Suzu to overcome the symptoms of PMDD, and her method helps Suzu to understand her "past" and "longings" that are hidden deep in her mind. This book should be read by all women suffering from PMDD.