[ thankfully, that hand is on the other side of her face. karkat isn't really used to openly expressing affection of any kind, much less physical affection. well. except with gamzee, and even that is often peppered with loving insults and threats, and he certainly doesn't kiss gamzee. so this foray into touchy-feely territory is probably about as confusing and uncertain for karkat as it is for ruka.
however. affection may be difficult for him to express, but it's also something he craves on a deep and integral level of his being.
gaining some confidence in the endeavor, he moves the hand on her face back a little to thread curiously through her hair, moving his lips against hers a bit more enthusiastically, still attempting to mind his teeth, but with an overbite like his it can be difficult to do so. ]
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however. affection may be difficult for him to express, but it's also something he craves on a deep and integral level of his being.
gaining some confidence in the endeavor, he moves the hand on her face back a little to thread curiously through her hair, moving his lips against hers a bit more enthusiastically, still attempting to mind his teeth, but with an overbite like his it can be difficult to do so. ]