For Tenkoku, other than Tensho (the ancient seal style of writing), he freely and vigorously used Reisho (the demotic semi-square style of writing), Kaisho (the block style of writing), Gyosho (the semi-cursive style of writing), Sosho (the fully cursive style of writing), Yamato kointai (the old seal style of writing created in Japan), Kana (Moji) (Japanese syllabary characters), Bonji (Sanskrit characters), etc, and not only stone seal, he created seals with various materials, such as casting seal, ceramic seal, wood seal, etc.
篆刻には篆書以外にも隷書・楷書・行書・草書・大和古印体・仮名(文字)・梵字など自由闊達に用い、印材も多様で石印以外に鋳造印・陶印・木印などを製作している。