"You haven't changed a bit, you craven whelp!" A thunderous voice boomed as a giant fist slammed into Ragnar.
The suddenness of the attack tore the hood from Rider's head, revealing a familiar face—a wolf! A wolven warrior with fangs bared in a snarl of rage and murderous intent. The Rider of the Istorre faction, his True Name was…
"...Sinfjötli!"
Ragnar's eyes widened as he took the full force of the formidable blow to his central abdomen.
It was only then that he realised his blunder. He, the hunter, had become the hunted. But shock and regret didn't stop him. His heart remained calm, focused, and unclouded. He'd resolved himself for this confrontation.
Ah, it's been a while. I know your scent, Uncle.
So, despite the unexpected blow, the warrior did not retreat. He gritted his teeth against the excruciating pain of several completely shattered ribs and ruptured internal organs, forcing down the blood clot rising in his throat. With a measured swing, he launched a counterattack with his heavy axe, aiming to crush the giant fist without harming the precious princess he held protectively against his chest. It was a half-reflexive attack, but he put all his killing intent into it.

Fate/Lost Einherjar, Chapter 3