Kylo's rough, torn-edged gasps blend into the growing urgency of Ronan's thickly delirious cries as he pushes and pushes and pushes, ruthless and indefatigable. More. More is all he gives in response to Ronan's desperate, shuddering pleas. More is all Ronan will earn for every scrabbling, futile attempt to break free he can't help but make, the building weight of the promised release they're surging towards pressing in on all sides and crushing them together.

Kylo drags them to the summit, but it's Ronan who pulls them over the edge. His body seizes tight around him, trembling, searing, Kylo's coiled grasp tightens as leverage to drive every last fraction of himself deep, deeper, buried— and the break bursts through the both of them in wildfire.

He shatters apart, gasping, bleeding into Ronan's senses as he shudders and spills in wild, violent pulses, spending himself utterly in the claiming heat of Ronan's body. He's filled. He's so full of him, saturated to the core as they fold and collapse together, heaving with exertion in the aftermath.