My Pet Is an S-Rank Nightmare (English-dubbed)

Silas Hayes died betrayed. Then he woke up — back on the eve of an Anomaly Tide. This time, he has one goal: protect his little brother Cody, and stay far away from the people who sold him out. Then he finds a stray dog in an alley. Scrawny. Pitiful. Begging for scraps.

He names it Grim. Except Grim isn't a dog. He's an S-Rank Anomaly — the Shadow Wolf — capable of tearing through reality with a single howl. And Silas accidentally binds him with a power he didn't know he had: the Absolute Contract. Now he can tame any Anomaly. And here's the thing — his "weak" little brother Cody is not what he seems to be either...