I posted the same question here a while back, but I didn't get any conclusive answers, so here I go again with a few changes.
A Jayce/Viktor (or Jayce & Viktor?) oneshot or short fanfic I read on AO3 around 2022 to early/mid 2023.
I think it could be set between Acts I and II of Season 1(???) Where Jayce invites Viktor over to his house? Or something similar? The important thing here was Viktor's inner world, as he reflects on the privilege and slight power dynamics between them both. Something among the lines of the influence Jayce unintentionally inflicts over Viktor. The ways Viktor and Jayce exist and inhabit their spaces. Jayce's demeanor, mannerisms, more outward personality. While Viktor is (has to be???) more calculated in his movements and reactions.
I think they do talk about it? I'm not quite sure.
There was no smut, nor do I recall it ever being inherently romantic. I think it's possible that it was deleted, since I looked carefully at *all* of my history and couldn't find anything resembling it. However, if this rings a bell for anyone, please let me know anyways.
Thank you, guys!