Vinland Saga

Thorfinn is the son of a great warrior who walked away from war. When raiders kill his father, the boy attaches himself to the killer's band, demanding a duel he keeps losing, growing up into a hollow young man who knows nothing but revenge. The first season is a war story about ambition, betrayal, and the politics of conquering England, all seen by a child who is being slowly emptied out by hatred. It is brutal and well-researched, and it is honest that the warrior life everyone romanticizes is mostly mud, debt, and men dying for someone else's crown.