That day, when it was suffocatingly hot, I lost everything… Family? Friends? Lover? These are things that I don’t need. Haru Kisaragi is a first-year high school student who stubbornly refuses to get involved with other people. There is one reason why he does so. Meanwhile, his classmate Saya Mishima begins to take an interest in him. A boy with dark eyes and the most beautiful girl in the school with a dark heart. When these two meet, their time, which had stopped, begins to move.