<blockquote>Lan Zhan is—everything. Wei Wuxian looks at him, and he aches. And somewhere near the base of his neck, wrapped around the white bones of his spine, the little hitchhiking ghost whispers: wouldn't it be nice, if we had him all to ourselves? Wouldn't that be nice?
That's the crux of it, really. Lotuses bloom for half the year. The sun sets in the west. Wei Wuxian wants Lan Wangji. And the ghost, too, wants Lan Wangji—but it wants much more than Wei Wuxian is willing to take.
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Wei Wuxian picks up a parasite on his travels. It wouldn't be such a problem if it didn't listen to him so much.</blockquote>
➤ I love that lqr is who is able to help in the end!