Every morning, senior members of Kudo-kai, arguably Japan's most violent yakuza gang ... looking dapper in either a blackish or navy-blue suit. His hair was short, speckled with gray.

The Nagoya High Court on Dec. 14 told Kenichi Shinoda, head of the Yamaguchi-gumi, the nation’s largest yakuza group, and a senior member of an affiliated organization to pay 7.51 million yen ($ ...