Hitsugi no Chaika

5 years after Emperor Arthur Gaz was killed and the long war ended, former saboteur Tooru Acura has no idea what to do with peace. His life changes when he meets Chaika Trabant, a small wizard carrying a coffin and searching for pieces of her father's remains so she can bury him. She hires Tooru and his adopted sister Akari to retrieve them from the heroes who killed him.

The problem is that Chaika's father was the emperor himself, and the Council of 6 Nations believes gathering his remains could threaten the fragile peace. Tooru finally has a mission suited to him, but he cannot tell whether he is helping a grieving girl or rebuilding the cause of another war.