They have defeated the group of fighters, and just killed several of them. While many people would find the current mood to be...less than pleasant, for this sort of activity...they are far from 'normal' people.

"I would welcome that, Kreyu."

Recalling her earlier hesitation, his own also creeps up a bit as he allows her to initiate the kiss. Clearly, she is nervous, and despite the familiar surge of Light that builds in his system as she leans in towards him, it is also...new, and uncharted.