"Naho immediately feels a connection to the new boy who has transferred to her class. Kakeru is calm, kind, and seems to like Naho as well. But their relationship gets thrown for a loop when Naho receives a letter from the future. The letter explains that Kakeru will die unless Naho does exactly as the letter says. But changing fate is no easy task. When the letter starts to get things wrong, Naho worries she will lose Kakeru forever. Luckily, Naho...

Reuniting in college, Suwa and Naho's lives have been scarred by their experiences in high school, and though they say time heals all wounds, sometimes, time is not enough.