He could joke right about here that Kija would be more prone to being around Yona, even if simply to be able to protect her (and also even if there was noting in particular actually going on), but that was one conversation - of her being the topic - that he knew neither of them wanted to get into. It would only stir up undesirable thoughts and feelings all over again.
But of course he wasn't one-hundred percent pure. Jae-Ha knew that plenty well already. It was clear enough by watching him on the battlefield. Although even with that aside, they were simply (very) different. Something which he was fine with, unlike his opinion of Kija when they first met (and for a little while after that).
So he was pleased all the same. "Of course." If he was to be more honest with himself, though, 'friends' was more like it. In regards to Kija, and everyone else in their group.
"Sake, huh?" He then grinned a bit now. "I'll have to introduce you to a couple of new things, then."