Elementalis

The Beginning

In the beginning of Elementalis, There were 3 God-lords: Yoikami(God of Good), Yukakuma(Devil of Evil) and Yachusei( Man of Chaos) who created 6 races of beings: Humans, Elves, Beastkins, Anthros, Homunculi and Demigods to roam the planet

Not only that but created 40 Gods who keep the Races in balance to prevent war and controls the elements of the world:

Pyrus, Aquarius, Zizumaro, Terra, Castiel, Krowley, Crimza, Dokura, Magiku, Plato, Kemuri, Jester, Cybernetta, Emerali, Gaia, Aries, Lucas, Yeta, Runo, Hawkins, Quartz, Lumi, Seth, Kazan, Eris, Garawak, Orashi, Mokujin, Inkumari, Gajiell, Aburame, Tokyato, Sheena, Tekina, Otoki, Mondai, Sunarshi, Hoshino, Jikikan, Yureimo, Purazuma and Kageku.

These 40 Gods created their own clans in order of remaining the Races that there as are the Gods living among them, So that they can keep the Races from creating wars against each other for prideful reasons and envy of other's abilities. This peaceful cycles was doing well for 30 centuries until a tragic betrayal happens..

Yachusei got bored of this cycle and decided to wound Yukakama then takes control half of the Gods to cause endless havoc.

Once Yukakama  was healed, She makes a ultimatum and makes a truce with her Elder brother , Yoikami to stop Yachusei and free the corrupted Gods from his control!

But when they tried to defeat them, The corrupted Gods managed to overpower them, even the  Gods that wern't corrupted couldn't fight them since they are family. 

And then they've realized, they need the strongest warriors of Elementalis to finish the fight and end it once and all. So Yoikami and Yukakuma told their remaining Gods to spread the words and find the most strongest people they can find to stop their younger sibling's plot for good!