The gods that appear are from the anime Shuumatsu no Valkyrie, in terms of Beelzebub he is not a demon in this story as in Christianity, I am not following anything that is not the anime or manga. As you know, the characters do not belong to me, just the main one and a few throughout the story that are fruits of my imagination. Veela are extremely beautiful women and are a kind of fairies that originated from the spirits of women, only women can be veela, although male descendants possess some of their powers, they are called mestizos however. This is an 18+ story so read at your own risk! It contains innuendo and sex scenes, as well as violence and fight scenes.