日本剣術教室. Nihon Kenjutsu Kyoshitsu, or "Japanese Sword Arts Study" featuring a castle design (城 Shiro).
Available in unisex adult sizes S-3XL, printed on Gildan G500 heavy cotton 5.3 ounce t-shirt (100% preshrunk soft cotton). Choose either black shirt with white print or white shirt with black print.