Shougai Kimi ni wa Kanawanai

In elementary school, Aya was the best in everything. However, she loses her No.1 position to a transfer student, Shin. Shin changes schools again, and Aya continues to work hard... But when Shin moves to a new company, Aya is in second place. Aya challenges him to a competition, and Shin confesses his feelings to her...?