@Michael_Mikoto Yes your OC can join. Just be sure to specify him or her as an esper or mage, and what kind of ability or magic they have. Also tell what level he or she is if she/she is if that OC is an esper.
@Omney_Pie Could you help us spread the word for this? To be honest, I wasn't expecting people to make an RP for my series, but it sounds so awesome, I wanna see how it turns out!