Wooden Sword

The wooden sword, or bokken, is a katana made of wood that is primarily used in kendo. Before recieving the Murata-tou, Saeko Busujima uses her personal wooden sword in combat. It is a special sword with ties to the Busujima Clan and the Yamato Dynasty.

Overview
"The mysteries of the Yamato Dynasty and the Japanese people are sealed within this sword. The Busujima Clan, descendants of a family that has protected the throne since ancient times, have transcended time and space to continue protecting those secrets. This has nothing to do with the story of 'Highschool of the Dead', though. -Daisuke Sato