Jack kissing him is a completely different experience to John doing the same. For one, Jack doesn't have a maw full of spines, nor does he have a long, winding tentacle for a tongue. And this time, Serph is actually cognisant for the beginning and doesn't have a mouth full of pointed teeth.

It's warm and gentle like Jack, contrasting the cool press of something between their mouths. Serph doesn't think twice about accepting it, a hand fisting in Jack's shirt as a energy floods into him. The dizziness and exhaustion from his own magic lifts away in the face of Jack's. Renewal and rejuventaion spreads though him, Serph fiercely returning the kiss as though trying to devour the rest of the magic passing between them.