Another theory suggests a different type of soup broth, Tokai type or Nagoya type, existing in addition to the Kanto and Kansai types, by regarding the Tokai region as an area with separate Udon noodle cultures, not as an area merely lying halfway between the Kanto and Kansai regions.
これに東海地域を中間とせず別個とした、、と区別する意見もある。