These are similar books in the periphery of koten shisho and, although we may call them heretical ancient historic book similar to koshi koden, it is unreasonable to include them in chokodai monjo or koshi koden.
これらは古典四書の周辺的な類書であり古史古伝に準ずる異端古代史書とはいえても、超古代文書だとか古史古伝そのものに入れるのは相当な無理がある。