The Kodo-kai (弘道会 Kōdō-kai, Koh-doh-kai) is a yakuza criminal organization based in Nagoya, Japan.

[6] The Kodo-kai is notorious for its defiant attitude toward the official, and has dispensed with the yakuza's traditional policy of co-operating with the police.

And when Tsukasa became the kumicho (Godfather) of the Sixth Yamaguchi-gumi in July 2005, his Kodo-kai partner Takayama was given the position of the wakagashira (number-two boss) on August 8.

Kiyoshi Takayama who is the number-two boss (wakagashira) of the Sixth Yamaguchi-gumi and the founding head of the Takayama-gumi, and former chief director (rijicho) of the Ryoshin-kai.

Kodo-kai reportedly raked in an immense amount of money by being the sole supplier of rock, sand, and gravel for the Chūbu Centrair International Airport construction project.