Murata-tou

The Murata-tou is a katana made in the Tokyo Armory by General Murata during the Meiji Era. It is owned by Souichiro Takagi until he gives it to Saeko Busujima as a gift for protecting his daughter Saya Takagi. Saeko uses the sword in place of her bokken after recieving it from Souichiro at the Takagi Estate.

Trivia

 * In the manga this weapon was given by Souichiro Takagi, while on the anime it was found on the shrine where Takashi and Saeko stayed for a night