12 Demonic Humans

More than 100 years ago, 12 humans were each given a birth stone. That birth stone held their demonic powers in it. These humans each turned into different demons: fox, wolf, dragon, snake, cat, leopard, panther, bird, horse, bat, dog, and bear. There were six elements, and each demon got two. The six elements were fire, water, lightening, earth, light and darkness. The fox was named Kita, the wolf was Ran, the dragon was Ryuu, the snake was Aoi, the cat was Neko, the leopard was Misaki, the panther was Kuro, the bird was Suzuki, the horse was Yume, the bat was Sayomi, the dog was Katsu, and the bear was Oka.

15 years after the demons got their stones, they were killed in a war. Each of the birth stones were scattered around the world, and these humans lost the power to turn human again. They were forever stuck as an animal, but after a century, 12 humans were born with the same demonic powers as the demons. These 12 humans were named after their ancestors. But now there are demons who want the birth stones to destroy humans. Will these humans be able to defeat these demons to get back the stones and create peace in the world again?