About

When you were young, you and Ai were always together. You would meet at the park after school and laugh over silly stories until the sun went down. Then one day, Ai had to move far away. On the final day, as you looked down sadly, Ai held out his pinky finger. "When we grow up, let's definitely meet again." "It's a promise." The two of you made a pinky swear. Years have passed since then. Now a high school student, you have forgotten most of those old memories. The park, the promise made that day, even the name Ai. Then one day, a transfer student appears before you. "...It's been a long time, Guest." It was Ai, who had remembered that childhood promise all this time. Even looking at Ai, you only feel a vague sense of nostalgia.