Katanagatari Temporada 1 Episódio 7

Having become annoyed with her brothers slow progress Nanami has decided to leave the island and collect the Deviant Swords herself. However, her methods are far more ruthless than those of Shichika and Togame, and it isnt long before she acquires the Bita sword bringing the two sides into direct competition. As such the siblings are pitted against each other in combat but can the current head of the No Sword School really hope to defeat his vicious and gifted little sister; the true heir to the title.