"A question has gnawed at my mind for a long time. A question that sometimes doesn't let me sleep. I hope one day to find someone who can give it an answer. On one occasion...I met the purest person in the world. His presence radiated happiness over everyone. Everyone enjoyed his company. I did too. But that person..."Sho is a high school student who is in his last year before entering university. Determined to focus on his studies and leave the past behind, his routine changes when he meets Kazumi, a girl who has just arrived from another state in the country. At the same time, Sho reunites with Nara, an old childhood friend with whom he shares memories that he thought he had