Son of the famous General Agemaki of the Imperial Army, Kei is the main male protagonist of the series. Although he appears to be 'the charming prince' he is actually afraid of spirits and freaks out pretty easily when encountering different spirits. Kei is partnered up with Zakuro in the Ministry of Spirit Affairs, she often calls him a "Wuss" which he often admits. He tries to hide his fear of spirits from the others, but ends up being exposed by Zakuro.