I wasn't sure if it would just be an argument or if it would be a full on fight. Scruff's already shown to attack someone when his temper acts up (poor Fern'shade!) who was LITERALLY his brother! Who says he won't do it again? (hehe, I got to draw a panel in that chapter ;) Quick theory: Scruff'paw and Blaze'paw act like Graystripe and Fireheart back in Fire in Ice and get into a fight, and someone, either Echo'paw, Fern'shade, Haven'wing or Seal'star has to break them apart. If Echo, then it would give a chance to prompt an argument about her involvement. "Oh, you're taking Blaze's side? He killed me! You saw it!" "That's not-" "Scruff, I wasn't thinking straight..." "Again, HE KILLED ME. How could you possibly trust him?!" And so on. If Seal breaks it up, Scruff would have a greater reason to resent him because, again, someone's taking the side of his killer. Similar to Echo if Fern or Haven broke them apart. Scruff would feel isolated and betrayed, while Blaze doesn't get the chance to properly defend himself, or he does but poorly? Maybe he admits he thought he had a crush on Echo, and seeing Scruff hang out with her fueled his actions. Yeah, those are my thoughts. (+) If I had a nickel for everytime an orange warrior cat OC got possessed by the grandmother of the main characters, killed his brown pelted sibling, and crushed hard on a blue tom, I'd have two nickels, which isn't a lot, but it's cool that it happened twice. Who said that? Not me. Nope.
OCs: From left to right, Blaze'paw and Scruff'paw from @Inara45 's comic "ECHO!" It's good, read it! Art: @Floppy_Art83 "Theory" in Instructions