Doujigiri Yasutsuna (童子切安綱?) is a Noble Phantasm of Minamoto-no-Raikou. A katana made for the execution of criminals. A long blade understood to be the greatest of Japan's five most celebrated swords. Though it is considered to be the blade that lopped off Shuten-douji's head, it can not be confirmed as the Minamoto-no-Raikou summoned to Chaldea refuses to discuss the details of what happened on Mount Ooe.
This blade is used as the final blow of Raikou's Ox-King Storm Call.