Terao Magonojō (寺尾 孫之允, 1611 – November 8, 1672) was a famed swordsman during the Edo period (17th century) of Japan. Magonojo was the elder brother of Terao Motomenosuke, the successor to the School of Musashi. Magonojo has been noted as Miyamoto Musashi's favorite student, to whom Musashi entrusted his Gorin no sho (Book of Five Rings) before his death. Throughout Magonojo's early years working alongside Musashi, he trained with the kodachi, a type of short sword. On one occasion when they were training together, Musashi attacked Magonojo with a large wooden sword, which Terao parried with his short wooden sword and counterattacked. After several repetitions of this action, Terao's sword broke while Musashi was in the middle of striking his sword from above; however, Musashi's swing stop