Well this isn't really fanfiction since it's not based on any show, but I have decided to write stories that I've made. Before I jump into the story its best if you know about the characters first.
My main character is a 13 years old boy named Kukai Izumi. He has sapphire blue hair and eyes. He's very kind hearted, rarely gets upset because he doesn't like showing "negative" emotions, but because of that, he gains a "friend"- another him to be precise. This friend is Kukai's dark side, meaning he's everything Kukai isn't.
Another character is Kukai's best friend Dinto, he has orange hair with matching eyes he's hyper, an all-around trouble maker, but can get out of any kind of trouble he gets into. Dinto is 14 and has known Kukai since he was 9. Dinto is the only person that knows about Kukai's friend and promises not to tell a soul.
Naibu Noarukoto
(Inner Being)