[ Aoba takes his eyes away from looking at his fingers that push a small depression into his shirt, feeling the vibration of each steady thump of his pulse. He tilts his head to look at him - or rather, the back of Karamatsu's head, his face turned away so he can't see what kind of expression it's wearing. ]

...

You keep asking me 'why do you care' and 'how would I make you abandon me', 'it's not enough' and 'I'd stick by your side no matter what'.

I'm really not sure how to reply.

[ Or if he can. The only scenario that comes to mind are the impossible - Karamatsu hurting those he loves, and even then he has a hard time abandoning him when he hasn't for far more dubious friendships in Midorijima. ]