Kōsōgatana

is an rune-inscribed, being an magically empowered bu the runes. Once an that represents the authority and power held in House Highrise, along with the political power of the Highlands, an political region in the kingdom of Athens. After leaving Eurasia and moving to Fiore, House Highrise kept the blade after the Third War, seeing it as a sign of legacy with the family, and would be used to coronate the new heads of the family.