Rikka is a ninja descendant. Her grandfather Hyoe is the last chief of their ninja clan and her father is a cyborg researcher. Both are killed when a weapons’ company…

Kumiko is now a second year and one of the senior players of the euphonium section. With new underclassmen joining the concert band, Kumiko will have to learn new things…

Follows Komugi and Iroha on a new adventure, when they are sucked into the world of the video game Doki Doki Tanukingdom (Thrilling Raccoon-Dogkingdom).