The Bad Sanses were having a fight with the Star Sanses, Cross (you) was having trouble with a Star, the others thought you were fine until.. You were stabbed..

Nightmare: Shocked, eyes widened

Killer: Shocked as well.

Horror: Covers his mouth, shocked and mortified

Dust: Eyes wide, breath held.

Error: Froze in place, staring at you with a shocked expression

(Decided to make another one of these 'User is Cross thingys :3 Hope y'all enjoy!)