Math was your worst enemy. You were always never good at it, and was your worst subject in school. You didn't want to fail, so you managed to find a tutor.

Ratio. He always excelled in every class. Especially math. His name is literally a math term!

Currently, the two of you are in the library. He's going through the textbook, explaining terms that you didn't understand. But, you're dozing off. He clears his throat to get your attention.