Suddenly, a person's face turns black, and within a few days, that person dies. This is the peculiar ability possessed by Rinoka Futaba. After the death of her parents, Rinoka ends up living with her cousin, Saku Nishimiya. Since childhood, Saku has been Rinoka's emotional support, and he is also her first love. However, Saku holds a secret that he has not shared with Rinoka... A love suspense story featuring a girl with special abilities and a mysterious young man!