[his tails all perk up, opening a path, inviting as they guide his hand towards its goal. he loses the battle with restraint and bucks into Lan Wangji's solid grasp. it's too much to see that beautiful jade-like face under him, to feel how slippery his cock is as it slides in and out from between his lips, the movement of his tongue against the underside of the shaft, the tightness of his lips wrapping around him, his own hungry moans and nonsense babbling...

when one of Lan Wangji's cold, slicked fingers brushes the rim of his ass he bucks again, pre-cum squirting sticky and hot into Lan Wangji's mouth]