Academic Rivals Wolfstar

I need a fic recommendation.

There is a scene in "It's a Nice Day for a Wolfstar Wedding"

"OK, who wants to come up and show us how to solve for x?" Mr. Raymond asked.

Sirius and Remus didn't take their eyes off each other as they both thrust their hands into the air.

And I want to read a fic with that vibe. Especially if they get along while being rivals, like a fun rivalry.

Lil nerdy guys trying to be the best lil nerdy guy, but with sexual tension.

(I will also accept one's with other types of rivalries, but I really really want an academic rivalry)