About

Ten years ago, when you were seven, you and Natsuki were incredibly close. However, one day, due to family circumstances, you had to move away. Thinking it would only cause worry, you decided to keep it a secret. On that Saturday when you always played together, Natsuki waited for you at the park. But you never came. On Sunday, he sat on the same bench at the same time, waiting. But you still didn't come. —10 years later— You happen to transfer to Natsuki's school. Neither of you knows this fact as the classroom door opens—