I've been tossing this idea round for a while. I take great inspiration from anime for this one, and so I imagine that it will feel and look like an anime in roleplaying format, at least to some degree. The premise is rather simple: humans get their hands on a very old form of magic that allows them to bind angels and demons to their will. It would fit nicely into the harem genre, as the human characters would probably bind multiple angels and demons. Those bound would then be used selfishly by many humans, some who see to use them to gain power over others, and some with intentions of global conquest. Others may try to stop them, selfish or not. If you must know which anime series I draw from for this think: Fullmetal Alchemist and Heaven's Lost Property, if those angeloids were summoned and bound by the alchemy in FMA.
So that's the short version. Here's the long version:
On December 22nd, 2015, an anonymous individual posted a short blog on the internet detailing his findings of an ancient form of magic. It was a series of symbols that, when activated properly, supposedly had magical powers that could perform wondrous miracles and could also have devastating effects. Only a handful of people ever saw it though, as a few seconds after it was posted, the entire website disappeared without a trace. Only some of the most basic pieces of the ancient magical text was ever exposed to most, and even a smaller group actually decided to save the information. Smaller yet, was a group who decided to give it a shot.
The magic was used for a lot of things, but most of the information posted on the site before its shut-down was quite a bit about magical summoning circles. These circles, when drawn properly and exposed to the right rituals, would summon and bind a powerful supernatural being--an angel or a demon--to the caster. The power of that being would vary depending on the size of the circle and the symbols drawn into it. The angels are divine warriors of heaven, wielding light magic and all kinds of power born unto them. The demons are dark creatures, and sometimes less human and more animal, wielding magics and powers of fire and darkness. They are at war with each other on another plane of existence, and hate each other to their cores.
When they are summoned and bound, they may not always accept their new masters. Some may despise them. But the magic that binds them keeps them from directly attacking them, and from disobeying them. IT physically pushes and forces them to do as they are told while also toying with their minds, making them slowly more willing to submit. They also lose their supernatural form, their power being degraded and limited by a new mortal body. Only three things can break the bind: If the binder, their master dies. If their new mortal form dies. Or, if their new master whispers into their ears the magical spell intended to free them.
While everyone surely has their own purposes and uses for the bound angels and demons, some have decided to use their supernatural powers in combat, attacking others, or even governments, taking control for themselves. Others intend to wage a holy war against the world with them, zealously killing all who don't join their cause. Some use their bound angels and demons to empower the weak, and defend against these attacks. But unbeknownst to them all, the binding of angels and demons has not gone unnoticed on the supernatural plane. Powerful forces are at work to make an appearance on Earth to end this nonsense and reclaim their stolen soldiers, and to conquer Earth in the process.
The rp would start just as the first angels and demons are being summoned by humans. As you might guess, there are three potential character types: Humans, Angels, and Demons. So I'll throw up a basic character sheet, and if you want to join, fill it out to your heart's content. Multiple characters will be allowed. Some may die off but not as a kink, as a part of the plot and the story! This is not intended to be an Extreme rp, so let's not make it one!
Species: (Angel, Demon, or Human. You'll be able to get more specific in the description)
Master: (You may choose another human character, your own character. "Free" angels and demons will not come until later on. Humans need not fill this section.)
Binds: (List any angels and demons bound to the human, include both your characters and others')
Description: (Please do not overpower your character. The first of the angels and demons will not be that powerful, and humans will not start off knowing how to summon more powerful ones.)