Kokon is a fox-demon girl who comes to Tokyo to repay her debt to Ren, a boy who saved her life.

Ren is a country bumpkin who recreates himself as a smart & cool guy in Tokyo. He is a Japanese demon otaku, but hides his hobby to his friends.

Kitsuneko is a fox-demon girl from the same fox-demon clan as Kokon.

Kazune is Ren's classmate who is smart, good-looking and cool. (He is one of the main characters of Kamichama Karin)

Himeka is Ren's classmate and Kazune's cousin. Ren has a crush on her. (She is also a character from Kamichama Karin)

Umibozu is an ocean-dwelling demon who Ren helped during a trip to the beach.