Welcome to Grim Dudgeon by Cedric Nye
Domn Bestie was born in blood, raised by a group of the most feared assassins in the world, and then thrown out into the world to fend for himself at the age of 12.
He makes his way to the city of Grim Dudgeon in Otherworld in hopes of finding sanctuary, but only finds more danger.
Hunted by the most feared gang in Grim Dudgeon, the young boy learns quickly that the only thing in Otherworld that is easy is dying. Welcome to Grim Dudgeon. Here there be monsters.