[2] Most of its members were drawn from the bakuto (traditional gamblers), and illegal gambling has long been the clan's main source of income.

[3] Kazuo Uchibori may be next in line to lead the clan, but his status as a kyodaibun (blood brother) to Takeuchi Teruaki, a senior member of the Yamaguchi-gumi, may complicate things.

The Inagawa-kai quietly helped to provide relief in the wake of the 2011 Tōhoku earthquake and tsunami by sending supplies to affected areas.

As a whole, the group shipped over 100 tons of supplies, including instant ramen, bean sprouts, paper diapers, batteries, flashlights, tea and drinking water, to the Tōhoku region.

[5] On April 7, 2019, Jiro Kiyota retired from kaicho and assumed the position of sosai,[6] but remains the leader according to the National Police Agency.