Choden Bus Co., Ltd., headquartered in Nagano City, Nagano Prefecture, is a bus operator within the Nagano Electric Railway Group.
In 2025, marking the 30th anniversary of its corporate spin-off, Choden Bus introduced a new flagship vehicle: the Mitsubishi Fuso Aero King double-decker bus on the Express Shiga Kōgen Line, operating between Nagano Station East Exit and Snow Monkey Park.
The double-decker Aero King accommodates 48 passengers on the upper deck and 8 on the lower deck, for a total capacity of 56. It significantly enhances passenger comfort on the route to the popular Jigokudani Monkey Park, where tourism demand has been rapidly increasing.