Akimeite Ding Dong Dang! (秋めいてDing_Dong_Dang!) is the cool-type ending theme for the second season of the Idolmaster Cinderella Girls anime. It made its first appearance on episode 20 of the television series, and episode 19 of the web series, on November 14th, 2017.
The outfit worn by the five person idol unit is called Ding Dong Bunny, and changes from blue to red during the performance.
Nobody here but us chickens!