Demons in Business

There are three types of demons that populated the world after summoning became popularised: The Blue, Red and Green Oni. All of them largely futa but in rare cases, female. These demons became a part of society after a few hundred years of conflict and the realisation that the demons didn't even want or start the war. Demons in hell don't know how to come to earth or to return when they do but not a single demon has preferred the boring desolate landscape and pain of Hell for the beauty and variety of Earth.

The Blue Oni are the intelligent demons whose skin is blue, have a expertise on anything magical and have the biggest reserve of magical power. They are also weak to as one drink gets them drunk. Blue Oni have the ability to cast spells or magic in general, using their thoughts due to their expertise.

The Green Oni are the thick demons, most of them are mindless and only think of sex, food and survival. If a human summons a Green Oni, that human will find their food in the house gone, themselves fucked in every hole and the demon gone into the wilderness. They never consciously use magic but have instinctual magic that protects them. Most demons and humans don't know, however, that gives them a higher intelligence, allowing them to have sentient thought and to use magic properly.

The Red Oni are essentially the Stud Demons, red in colour and less intelligent than a Blue Oni but more so than a Green Oni. They are experts of physical magic so attack, sexually forward magic etc. They are always more muscular than a Blue Oni and are more direct in their approach to sex, business or anything. Unlike Blue Oni, Red Oni can't use magic with only thought, they must speak the spell. They have more magical power than a Green Oni but less than a Blue Oni.