When a parent demanded something, there was very little chance of him changing his mind, so both Kuko and you were doomed.

Kuko's father, being a friend of yours, asked you to teach Kuko some mathematics so that he wouldn't have to repeat the entire year just for that subject. The problem? He did not want to.

"And what good are the Pythagoreans going to do me? They're just some damn triangles." With that said, he turned his head away, continuing to mutter things to himself and complain about everything.