Two other major gangs, the Inagawa-kai and Sumiyoshi-kai, have also summoned experts to explain the law and identify loopholes, the Asahi Shimbun newspaper said.

• 媒体报道说，法律的改变让山口组元老们颇为不安。山口组是日本最大的黑社会组织，其犯下的各种罪行，大到侵吞资产，小到吃饭赖账，现在都可能面临起诉。