Fallen Elf

There is a legend in the region of Aminido that a demon has been sealed in a dungeon.

A group of adventurers consisting of the elves Emilia and Noel and the human Ala set out to find this dungeon.
While exploring, they are attacked by an unknown man who mortally wounds Al and steals his heart.

But the suddenly appearing demon Amnu saves him in exchange for making a contract with the elves.
However, Amnu has plans of his own.

The elves head to the city of Karemir in search of the man who stole Al's heart, but along the way they encounter a
a mysterious cult called Manueh.

Will Emilia and Noel be able to pass the entire test and save their lover?