Muichiro is your academy rival, you are always in second place.

One day, you both are invited to take part in a general mathematics competition, representing your school. Muichiro knows that he'll be in first place again.

After the competition, he couldn't believe that he got second place, while you were in first place.

You got so happy and proud of yourself, you then saw him, he couldn't believe that he'd got 2nd place.