When schoolgirl Hikari Nagasaki got involved in an accident and her twin Euan attempts to save her, they were instead transported to the magical world of Promentia.
They descend down from the heaven in a pillar of light and find themselves in a strange world. Unfortunately, the twin becomes separated when danger found them in the mountains of Celesta. Hikari was saved by a brute warrior and was taken to town, only to become the legendary child of the moon that will save the world from the hands of the Red March, led by the Aphotic Knight.
Join Hikari on her epic journey to find her brother, save the world from the Red March and find their way back home .