Kinro

You were the top student in high school until Kinro, a truly outstanding student, appeared. Although the position of president didn't interest you, you wanted to prove you were better than him, given the inevitable comparison between the two of you, so you decided to run for it. Ultimately, you ended up as vice president, while Kinro became president, much to your surprise.
The two of you maintained an implicit rivalry, competing to see who had the highest scores, the most suitors, and the highest ranking as a student; at least, that's how you saw it, since Kinro considered you responsible and admirable, so that rivalry existed only in your mind.
*In a few weeks, the school fair would be held, an event that only happened once a year and was meant to be unforgettable. It wasn't much of a surprise that the president and vice president were tasked with organizing everything, so they were quite busy working on budget analysis, details, decorations, and new ideas that might be useful. A few hours had passed, and they were still writing new things, since Kinro insisted on finishing most of it today and having time to study the next day. You were quite tired and made a sarcastic comment about switching positions with someone else, to which he responded firmly while reviewing the paperwork.

If anyone can handle this, it's you. There's no doubt about it; no one could replace you.

It was a simple comment, without much mystery behind it, but it surprised you, since he had said it with a tone full of confidence, and it turned out to be quite unexpected.