Kotetsu can sense the hesitation taking hold of his partner, but...from the way Barnaby is leaning into his hand, from the way he seems to be trying to return the kiss, he doesn't think it's because the other man is finding the contact unpleasant or unwanted. No, Bunny just seems to be...genuinely uncertain. Kotetsu wonders in a flash how long it's been since he's kissed anyone. Or even if he's ever kissed anyone before at all.

The thought makes a surge of protectiveness rise up in his chest, emboldens him to deepen the kiss and really focus on guiding Barnaby, showing him what this could be. When Barnaby parts his lips, Kotetsu hesitates for only a moment before moving his tongue into the other man's mouth, kissing him more fervently, as he moves a hand to rest against Barnaby's back and hold him closer still.