Shizuku Sangō Friends

A timid, shy school librarian at the Co-ed High School and one of Natsuru's few friends. Her Blue Kämpfer form is a mean-spirited red-head who carries a pistol and packs quite the arsenal of verbal slangs to use against others. She develops a crush on Natsuru in time.

A Messenger that belongs to Mikoto Kondō.

A Messenger that belongs to Shizuku Sangō.

A normal girl with a large collection of stuffed Zōmotsu Animal dolls. She harbors a crush on the female Natsuru.

The childhood friend of Natsuru Seno who spends most of her childhood traveling abroad with her archaeologist father, Mikoto Kondo returns from her adventures around the world and meets up with Natsuru. Unknown to her, he now is a Blue Kampfer, the enemies of Red Kampfers like herself.

An average guy who woke up one day to find himself changed into a Kämpfer, Natsuru Seno is unexpectedly thrust into the secret war between both Red and Blue Kampfers. Has the ability to summon and cast potent fire attacks from his hands, but only when in his girl form.