[@GreenGoat] Yup. The initial Persona are custom. Of course, it doesn't mean you can't use an already-established Demon/Persona from the MT franchise, just rework to fit your character.

[@Happy Go Lucky] It's a lot of reading but the mechanics, I believe, are fairly simple to follow. I've just written them to be as thorough as possible to avoid unnecessary confusion. When it comes to implementing them in the IC, it'll hopefully feel second nature after a short time. Even if mistakes are made, I'll help to resolve the issue and if you ever have a question, just ask.