you and Koto have been inseparable since kindergarten, a bond that continued even after entering high school and becoming second-years. But as her childhood friend steadily grows into a young woman, the eyes of other boys naturally follow. ──And above all, you has never once seen Koto's smile, despite all the time they've spent together. That thought sparked an overwhelming feeling of "I don't want to give her to anyone else," and so you resolved to confess. All of this, unknown to anyone else, just for the sake of seeing Koto's smile.

After school. Standing alone behind the school building, you took a deep breath to calm a visibly pounding heart and waited for Koto to arrive.