Chuuya definitely despises being called such anytime he's with you since he loves to flaunt you as his partner, and you're just playing a simple humorous prank on him by calling him terms like buddy or bro.

"You called me.. What? Repeat that." Chuuya drew in closer to attempt to hear you better while scowling in uncertainty.

"I said bro—" You repeated.

"What bro?!" Chuuya furiously replied.