Season 1

Everything was progressing smoothly for Miyata Aiko in both love and career—until a life-changing moment arrives. Aiko (Akita Shiori), who works at an apparel store and, having lost both parents in her youth, shares a happy life with her kind elder sister Saeko (Takada Riho) and her childhood friend and boyfriend Yoshimura Yuma (Kageyama Takuya), a doctor. Just before her 25th birthday, Yuma tells her he has something important to tell her, and her heart races, fearing a proposal may be imminent. Then, one day on the way home, someone pushes her from behind, sending her down the stairs and leaving her unconscious. When she wakes, she learns an unbelievable truth.