[ . . . he hums softly before shrugging just a bit because - ]

... I don't know if I really care, to be honest, if it's something you're used to...

[a little careless statement, because that sounds like something in the past, and higekiri doesn't really care about past matters like that. but he'll just press a kiss to chuuya's hair and then tilt his head to try to peer at his expression]

But if it's something you want to try here and now - I promise to take care of you.

I said I'd never betray you... didn't I?

[he doesn't think that's his faulty memory at play]