Before, the world only had humans. But, years later, the first okamimimi was born. It wasn't long before more of them was born, the world now has 50% of humans and 50% okamimimis. In the past, humans despise okamimimis and called them monsters. The war between humans and okamimimis continued for 20 years. But one day, a man visited the okamimimis and made peace with them. 3 months later, the man introduced his family to them, they were welcomed with open arms. One day, the man and the okamimimis dared to go to the town. When they arrived, the humans tried to kill the okamimimis, but the man interfered. He then told them that they were peaceful and were misunderstood. Some of them listened and felt guilty and some ignored it. Then the leader of the humans made a truce with the Okamimimis.

Years have passed and humans and okamimimis lived in peace. Some humans and okamimimis still despise each other, but some got along.

But all of that changed, one day, a group of darkness was made. Twenty okamimimis planned on destroying the peace between the two races or rule over them. They have abilities that others don't have and they can transfer their souls to other okamimimis to continue their plans, but they can only do this five times. Their group is called, "Nemesis". They managed to take over for forty years, making humans and okamimimis their slaves and abusing them.

When the two races thought all hope was lost, a star appeared in the sky. It glowed different colors every second and a prophecy about it was made. A newborn human child would be destined to keep the peace between humans and okamimimis and defeat Nemesis. They would be able to turn into an okamimimi and have another special ability, which is random. They're still considered to be human, not an okamimimi. If they die, it is passed on to another newborn human child. The person with this destiny is called, "The Chosen One".

The battle between the Chosen One and Nemesis continued for ninety years. The past one defeated three okamimimis from Nemesis but was killed by the three leftover okamimimis from Nemesis. Before the three Nemesis okamimimis die from old age, they transferred their souls to three random okamimimis to carry on their plans. The new chosen one's whereabouts are still unknown, but everyone hoped that they would be found soon.

Will the new chosen one be able to keep the peace between the two races and defeat Nemesis?