Mutsuhiro Watanabe's Sword

Origin
Mutsuhiro Watanabe (渡辺むつひろ, circa 1918 – April 2003), POW-given nickname, "The Bird", was an Imperial Japanese Army sergeant in World War II who served at POW camps in Ōfuna, Naoetsu (present day Jōetsu, Niigata), and Mitsushima (present day Hiraoka). Watanabe was classified as a war criminal following the war for his abuse of prisoners of war (POWs) held by the Japanese military. He is mostly famous for his abuse towards former Olympic star and pilot, Louie Zamperini. Watanabe openly admitted getting a sexual thrill from beating prisoners. Additionally, he had unceasing mood swings. One minute he would be beating a prisoner, and the next he would be handing them fistfuls of candy and cigarettes.