Rising Sun Valley Twirled into the arms of disgrace and then repelled

Any illusions Tybault might have held to about this fight, about the stakes here, were quickly erased under Lestan's vengeful assault. Forced to true violence, he defended himself without reservation now. He saw his sister's return vaguely at the edges of his vision, heard her call for Lestan. Not him.
It finally clicked, somewhere between Lestan ripping his face open and Lestan ripping him a front-end asshole. She would see him dead before she would accept him back into her life. Tybault would have fought to the death if he thought there was a chance, any chance — but there wasn't. He knew that now. So he pulled himself away from Lestan forcefully, and did something he had never done in his life:
Tybault ran, and forfeited the fight. And with it, his sister. He had scarcely touched Lestan, but bled heavily as he fled the scene; he wouldn't forget that, if he ever met the man again. No more than he would forget that this was the wolf who had taken his sister from him for the final time.