I can't stop thinking about your shakespeare/witcher au and how insecure geralt must be, knowing Shakespeare is a poet like Jaskier, and would be so much better suited for him. Because he knows all those words Geralt doesn't and he's afraid he loses Jaskier because words and poems ... and he's just very insecure about it. What if that/him is what Jaskier really needs instead of a moody, brooding witcher. Because I love for angst.
So Geralt, while they're trying to get Jaskier back, is beside himself. There's no monster to slay or evil to destroy: just waiting and casting magic and searching. It drives him mad.
And Jaskier, of course, vanished halfway through an argument, and Geralt knows he said things he didn't mean and, gods, the crux of the argument, like most of them - even if neither of them says it - is that Geralt refuses to just fucking talk to him.
And when they do get Jaskier back, he's different. He's sad. And it's been a couple of months for Geralt but its been over a year for Jaskier, and when that portal opened up in front of him he knew he had to make a choice. A choice between being saying, and being loved, and returning. Returning to Geralt, and uncertainty. To longing. To unspoken thoughts.
He bursts through the portal and its pouring with rain and there's a leather-bound book gripped in his hand which he refuses to let go of. He sings new songs filled with weird, unfamiliar words in stilted sentences that Geralt doesn't even understand.
He smiles, and says he's happy to be back, but it's a lie.
And then Geralt breaks. He waits till Jaskier is asleep, gently pulls the leather-bound book from beneath his arm, opens it up and begins to read and - oh -
Dandelion. My fair youth. Shall I compare thee to a summers day?
And suddenly he realises. Suddenly he can see the choice Jaskier made - the choice between this magical, lyrical man who loved him so hard he turned him into art and -
And him. The witcher. The butcher.
Geralt slides the book back beneath Jaskier's arm. Theres a hollow, ringing gap within his chest.