Demons (Akuma, 悪魔 literally meaning “Devil”), this genre pretty much contains things that are out of the ordinary. For example, demons, evil spirits and witches. However, this might also show in different kinds of forms such as people associating with demons or a demonic personality. This genre is usually mixed with other genres to add more purpose for the service, genres like Action or Adventure.
A good example of this genre is the series “Ichiban Ushiro no Daimaou”. Published in 2008, this story revolves around Akuto Sai who is a boy who aims to be become part of his country’s highest order of magicians. When admitted to the Constant Magical Academy, his aptitude test predicts his future occupation, Demon King. Now, his school life becomes hectic in which he is resented by his studious female class head, desired by a girl with mysterious powers, and guarded by a beautiful female android.