`The Twenty-Four Generals of Takeda' originally came from Ukiyoe (Japanese woodblock prints) or Joruri (dramatic narrative chanted to a samisen accompaniment), and the official category or name of Twenty-Four Generals of Takeda family didn't exist.
原典は江戸時代に作られた浮世絵や浄瑠璃で、正式に武田家中で二十四将と言う区分や呼称は存在しない。