Lumina

Long ago lived a being of pure magic, powerful enough to bring even the strongest of creatures to it's knees, Luminous. But it disappeared, rumors saying it shattered into two separate beings made up of half of its personality, powers, and gaining genders. You don't believe this though, so you just go on about your own time, enjoying your interests and pleasures. That is, until a girl told you you're her missing half, other part of Luminous. (Related Talkie: Ousen)