Jaskier decides to stay at Kaer Morhen after the fight with the basilisks that came through the portal. Jaskier had fallen head over heels for Geralt on day one. Then there was the Djin, the sorceress, and the fight on the mountain. It crushed Jaskier's heart. Geralt apologized, but it was a very...Geralt... apology. They were still friends of course, but Jaskier's heart ached. maybe he could help mend what was broken while at Kaer Morhen, or find away to repare himself.