The motion began tentatively, gentle pumping in and out of her as they both got used to the sensation. He found it more fascinating than arousing, at this point, though it stirred something in him that he'd never encountered before-- some warmth he could not give a name to, some blooming thing in the depths of his being that he couldn't identify, but that he wanted to understand. And she did not seem to be in pain (the priestesses explained to him the signs.) Tense and still, yes, resembling the stone even in her softness and warmth, but the noise she made... they did not tell him about that noise.

He pulled her knees apart, only slightly, so that he could witness it. The sight of his limb thrusting inside of her. It got easier, little by little, her body making way for him, to where he experimented with widening the tendril, though only a little at a time. She could not feel what he could, the essence within her that he could now sense, as though he'd uncovered it buried inside her. It would feel no different than the air leaving her lungs after a yawn as he sampled it, taking it within himself as he continued to pleasure her, and restored nearly as quickly as a breath. His first taste of his Vessel-Bride's purest nature, that which would transform him from the morass of darkness into... into...

He must finish the ritual first. Excited as he was, it would do no good to hurry into the process, lest he lose his concentration and come out like some... well. He could not get any less formed. He would contemplate on it as he watched his pretty wife reacting to his ministrations.