Based on Mirrors by MossAndMycelium! The character writing is really good. Everything from the inner monologue and character motivations to the interactions and bickering feels canon-typical. I also fw the plot heavy. Overall, it’s a good read for people who like the brutality of Janka, Jabber freakiness and Zanka angst/suffering, but also want some lighthearted Janka antics to balance it out just slightly. Plus an interesting plot that brings in some forced proximity. (We love that)
Warning for this fic though, cause it’s tagged as explicit and I’m not sure if that’s just for Jabber’s freakiness or something else that's set to happen in the future. (I, myself, will be watching out for that, especially after chapter 6 that dropped yesterday and had me incredibly scared the writing was going in a different direction. Thankfully, it was a fake-out.) But the first half is just too good a read for me not to mention and in its current state, I'd say it's a damn close match(in my opinion) between this, Larkspur, and Not Enough Settled Scores.