Shards of a Mirror

Hey, how's it going? I've created stories in the past (I've actually been on here for a few years or so), but this is the first post I've made.

My (proposed) story is under the working title of 'Shards of a Mirror', and the concept is this:
There are ideas of such a thing called 'dual existence'. Ideas, concepts, emotions, they have two sides that are wholes, but reflect each other. They can be opposites, like love and hate, or merely opposed without being opposite per se. They can define each other, or be offshoots. Now, what if our world was 'reflected' by another, opposing world? Beings from the human world can't enter this dark world without suffering tremendous consequences unless they're prepared, and vice versa. By all accounts, the two might have inhabitants who are aware of the other, but they don't interact, mostly.
There also exist things known as 'Aspects'. They are, essentially, the concept of an ideal, emotion, so on and so forth, that exist mostly as invisible forces. Small, able to fit in the palm of your hand, there are twenty in total, representing the feelings, emotions and ideas of inhabitants of both worlds. These Aspects range from such things as love, to justice, to moderation, so on and so forth. These Aspects are capable of tremendous power, but they usually just traverse between the two worlds silently, performing some silent, ancient task.
When the Aspects travel to the Opposing World, they become 'Dark Aspects'. Their corresponding trait changes to become an opposing trait, so love becomes hate, justice becomes bias, and moderation becomes excess. There are, at all times, ten aspects in our world and ten in the opposing world. So there are, at all times, ten 'Light Aspects' and ten 'Dark Aspects', and a balance is maintained. The Aspects can change between worlds at will, and often do, but an Aspect will always take its place from the destination world.
But something has gone wrong.
All of the Aspects, both light and dark, have unbalanced and flooded into our world. The Dark Aspects have not changed from dark to light, as they would if they had traversed normally. This has unbalanced the nature between the two worlds, causing 'breakouts' of the Opposing World to spread into ours.
The Aspects are powerful objects that radiate magic, and pass invisibly to those who are not trained to see them. Aspects also tend to form a symbiote relationship with a human, typically one whose personality matches the Aspect's in some way or form. Once formed, an Aspect can enhance a human's natural abilities according to their portfolio. In times of danger, when a human has woken to the Aspect within them, they can manifest its full power in a devastating Aspect Avatar.
Humans were never intended, however, to play host to a Dark Aspect. Faced with the human psyche and the alien Dark Aspect, a war breaks out within that person's mind and soul. The war can take weeks or even years as the human struggles to contain the power within, but the Dark Aspect always eventually wins. Half the time, in a cruel twist of fate, these Dark Aspects enter people whose personalities match the Dark Aspect's Light side.
Some humans, however, are chosen because their personalities match the Dark Aspect's dark side. In such circumstance, the human might very well surrender without a struggle to the Dark Aspect, allowing the Dark Aspect to form a powerful, if unnatural, bond. The Dark Aspect can thus unleash its power without the need to deplete itself in a struggle.
There are, however, two Aspects designed for this situation in mind. A suitable recipient is chosen for the first Aspect, the Aspect of Potential, which grants him the power to meet a (possibly) hostile Aspect on an even footing.
The other Aspect is created when the bearer of the first Aspect extends control over all twenty. The other Aspect then manifests, and allows the Bearer to set things right again, before disappearing.

The idea here is that the Aspects will join with people who will be played by the players who will then interact with each other as well as the Aspect of Potential's bearer. Thus, the story is created by the players, who will determine how it unfolds. It also has potential for unorthodoxy- a Light Aspect bearer might fight another Light Aspect bearer, whilst a Dark Aspect bearer might seek a Light Aspect for help, or vice versa.

Anyway, tell me what you think! I apologise if it's a lot of information to consume. ^^;