Ballern's hands

Ballerns hands was taken from him by his older brother, but since the hands didnt fit he neither got his hands back and he got swords as hands instead they were covered in fog so they were impossible to see what swords they were, people theorized because of their cutting edge they thought it might be a nodachi or a katana, only Ballern and Gunthers older brother knows what kind of sword it is, altough it does not matter what kind of sword they are, there has been no record of any stronger weapon in 1000 years.