Hayou no Tsurugi: Shikkoku no Mashou

Synopsis

In the Floating Castle, Rasutel—called Rasu by those who know her—battles demonic creatures. Selected by the unpredictable Demon-Breaker sword, she sets out on a quest to rescue an abducted princess from a Youki. Along the way, she receives help from Anshu, a strange Youki with an unusual quality: he possesses a primary color that normal Youkis lack. Yet her mission is complicated by her younger sibling, who is drawn to the demonic side and covets her golden eyes—a trait she inherited from her father, the Golden Youshu.