As they go to Eichen House Stiles notices something is up and Scott tells him his concerns about Kira – the flaming fox, the fact she nearly killed someone last week and the fact she’s started speaking Japanese despite it being a language she doesn’t speak. Of course Stiles has his own issues so desperately tries to make the point that killing in self-defence is justified (since he’s just done that himself). Unfortunately, Scott declaring the Chimera to be victims doesn’t really help Stiles’s guilt.
This is the one blight on an otherwise really excellent relationship. I love Scott and Kira together - it's well developed, their conflicts feel real, their emotions excellently real and how many shows have the main love interest be two POC? That's definitely rare