Criminal
I imagine the equivalent of Kaer Morhen in a Modern AU being that all the Witchers are flatmates, living next door, all in the same unit/apartment etc.
Jaskier one day just realising how hopelessly in love with Geralt he is. Imagine he lives opposite the hall from Geralt, and it’s the early hours of the morning. The Witcher’s got his head smashed into his pillow, fast asleep, snoring loudly.
The bard thinks of nothing better than to come over to Geralt’s unit, storm straight in, and start jamming on the lute and screaming:
“BUT MAMA I’M IN LOVE WITH A CRIMINAL!”
Geralt, waking up in a shock and daze: JASKIER WHERE’S THE CRIMINAL?! I WILL FIGHT THEM- *obviously far too tired to move* If there’s no one here, what are you doing-?
Jaskier, awkwardly stepping back out: *whispering* And this type of love isn’t rational, it’s physical-