The Kumamoto Daiichi Bicycle Club (shortened to Kumamoto Daiichi or "Kumadai") is situated in Kumamoto, Kumamoto Prefecture, Japan, that represents Kumamoto Daiichi High School. They appear briefly in the 41st Summer Inter High. They are one of the teams manipulated by Machimiya Eikichi on the third day, resulting in their team being exhausted and unable to compete for the goal.
They appear again as the hosts of the Kumamoto Fire Country Mountain Range Race featured in Yowamushi Pedal: The Movie. It's a race held annually where prominent Inter High teams compete in Kumamoto, on Aso Mountain. Sohoku is invited to the race, as well as Hakone Academy, who accepts the invitation for once.
Spare Bike 23 features the Kumamoto Daiichi team.