[1] The team is the rugby team of electric utilities provider Chugoku Electric Power, based in Hiroshima in the Chūgoku region.

When rugby union in Japan was restructured in 2003 with the introduction of the Top League, Chugoku Electric Power was allocated to the second tier Top Kyūshū League.

They remained in that league until a further restructuring prior to the 2017–18 saw the team promoted to a newly established Top Challenge League.

[2] In July 2017, they also adopted the name Red Regulions for the team.

[3] The Chugoku Red Regulions squad for the 2024–25 season is:[4] Props Hookers Locks Flankers No8s Scrum-halves Fly-halves Centres Wingers Fullbacks Utility Backs Chugoku Electric Power's record in the top two tiers since the formation of the Top Kyūshū League in 2003 was: