Humans protect the land. Mermaids protect the sea. Elves protect the forest and lastly Guardians protect them. They were given a huge responsibility from the God to protect their own district but destruction happens. Humans were greedy and they fought for the throne. Mermaids were cruel and they lured humans. Elves were passive and never cared about others. Humans had raised the Guardians anger; they destroyed their land and declared war against the mermaids.

Mermaids were known for their cruelty and they never showed mercy to others. They could destroy the human race in the blink of an eye. To avoid the war happen, the Guardians crushed the humans and started a new era for them. Their past memories were removed and they believed that they are the only creature on Earth. They only believe and pray to the God. To them, mermaids and elves are myths.

Meanwhile, the Guardians had made an agreement with the mermaids. They must never show themselves and interact with humans. The mermaids agreed and hid themselves in the sea. Some of them were against it since it was not them who declare the war and why must they hide their existence towards a creature that is weaker than them. In exchange, the God gave the sea to them and the Guardians will no longer have any power towards the sea and the mermaids.

Starting from that time, mermaids had lived as a myth. Their existence was only written in fairy tales. Peace came again am