Sai

Yuri Kitagawa (Sena Nakajima), a high school student studying for entrance exams, spends her days alone, troubled by her tenuous family relationships. Her love life is not going well, and she is struggling to choose her future career due to her family's financial situation. One day, a "certain man" (Teruyuki Kagawa) appears before Yuri. Yuri begins to open up to the man, but soon a terrible "disaster" befalls her.