Dante
If the sudden burning sensation roasting the half-demon's skin hadn't been enough to convince Dante that things had taken a sudden turn for the worse, then the presence of a hand on his groin mostly certainly was. While his healing took care of the first problem easily enough, the half-demon hadn't been intending to stick around in the same spot, and Petra's gesture only added to that certainty. Unfortunately, it seemed that her grip was quite secure, even by his own standards.
Matters were only made worse when a familiar heat let the demon know that the honey-haired girl had somehow set his balls on fire. Of course, his healing took care of that just like the burning that was already being inflicted on him, but still...
"You know, if you'd wanted me to get a Brazilian wax," Dante said nonchalantly, seemingly unaware of the fact that his balls were on literally on fire, "You could've just said so."
With that, the half-demon simply flicked her on the forehead hard enough that the impact sounded more like a gunshot than fingers against flesh. Pushing her away with his free hand, the half-demon focused for a moment before he seemed to vanish. Before anyone there could properly process what just happened, the half-demon reappeared behind the black-haired girl, guitar case in hand and looking thoroughly amused in spite of the current situation.
"Now that wasn't very nice," Dante noted, as if merely taking note of the weather, "Say, how long is whatever you just did going to stick around?"