"Lan Zhan," Wei Wuxian breathes as Lan Wangji shatters beneath him, coming harder than Wei Wuxian has yet seen. His issue splatters halfway up his ribs, and Wei Wuxian follows his impulse to lean down and lick it away, moaning a little as he feels taut muscle trembling beneath his tongue.

"My Lan Zhan," he murmurs, kissing his way up to his mouth. He cups his cheek with his - relatively - cleaner hand, holding him gently until the worst of his trembling has receded. "You came so hard," he says in wonder.