The female is Hikaru, (In Japanese meaning 'Light')
Nothing is known about her or her age, she is as mysterious as her beauty, literally because her hair covers her eyes and no one has completely seen her face.
One thing that she keeps best secret is that she is a Heartless possessing a random Nobody that had attacked her long ago, and has assumed that Nobody's former human form.
She knows a lot about Nanashi, a nobody possessing a heartless that attacked him recently and he seemed to have assumed his former human form because of it.
She is the mysterious character that only appears when the main character (Nanashi) is in need of aid.

The Male is Nanashi (In Japanese meaning 'Nameless')
He knows nothing about himself, who he is, what he is, or why a Keyblade has chosen him to be it's wielder when he finds out his heart is not truly his.
Nanashi is 12 years of age (or so he has come to believe), and is on a quest to find his heartless in an attempt to restore himself and his previous memories. The heart he posses now is a powerfully dark heart, and he somehow has the ability to keep it in check. The symbol upon his chest is the brand of the Nobodies but it is turned upside down, suggesting that he is in ways still a nobody, but still outlined as a whole person, because he has both a heart and his body.

These are Characters for a fan comic I am working on currently, You may recognize Hikaru, aka the lady in yellow, from my previous drawings in pastel. Nanashi is an alternative persona of myself as a non furry, he is extremely fun to draw but even more time consuming with detail. I'm still working on his Keyblade, what you see is when he retrieves a water pendant and attaches it to his Keyblade's chain.

I hope you like them, please I'd love to hear comments about them

Hikaru aka Lady in Yellow © to me
Nanashi © to me