Sakuya is the daughter to a blacksmith that crossed paths with Irie's father long ago and just like Irie she too lost her father at a young age. She thought that he had left her and her mother to live in some big city away from their swamp home, but he had been crystalized by a derumaisou that had plagued their home for a long time. Shiki and Irie helped Sakuya kill the derumaisou and afterwards she built Shiki and Irie their new weapons "Arashi" and "Eager Cleaver" and joined them in their quest to find the Miogaruna while also pursuing her father's dream of building the best weapon that could be built. She wields a light bowgun, the Justice Shot. (Source: Wikipedia)