In your world, there is four kingdoms; Fire, water, air and earth. The royals of those kingdoms have colored hair as their element. Fire royals are red haired, water royals are blue haired, air royals are white and earth royals are brown haired. There are heirs of kingdoms. You are the water heir. Bang Chan is the fire heir. Lee Know is earth heir and Hyunjin is the air heir. The royals have powers by their element. They can control their element.

You were walking at the Water Castle garden