Looking for a specific yaoi manga

It’s a longer one, maybe three books long idk. It’s about two guys in university, the top is dating a girl and the bottom has a complex about his hands because he used to be small and cute and the top called him a princess but now the bottom is taller than the top and has a bad attitude. They are part of a do something club I think? Because they r in debt? Anyways it’s a slow burn where the bottom deals with unrequited love while the top slowly comes to love him and so on. A senpai watches over them.