I'll Keep You Warm

Wei Wuxian finds himself in war with the Wens. He is losing his hopes as his mind slips with every blow of his flute and every ounce of demonic energy that surrounds him. Nearly escaping much desired death, he doesn't regret living one more night if it meant he could have Lan Wangji next to him to ground him to himself and away from the war.

A tumblr sentence prompt: "I'll keep you warm"

Wangxian oneshot