Kyle was going to kill him, that was certain, and Lucy panicked, especially as Kain did not defend himself, staying on the ground and receiving his brother's beating as if he deserved it.
"Kyle, stop it! This is all my fault... I was in heat and couldn't control myself!" she shouted in explanation, causing Kyle to get even angrier.
"Fucking monster! You took advantage of her again! This time I'll kill you..."
Lucy stopped thinking or trying to stop the fight with her voice. She shifted, thanks to the moon that made her very unstable tonight. And before Kain or Kyle knew what was happening, Kyle was being knocked off...