The protagonist, endowed with destructive powers, and the amnesiac heroine weave a tale of swords, magic, song, and love. Planet Arcadia. This world is said to have been created by the goddess of creation in the age of genesis. Rich in nature and resources due to the mana produced by the World Tree, it is a world where magic and mana machines have flourished. A utopia—that’s what this star was named. However, the current state is far from that ideal. Ceaseless conflicts, the emergence of magical beasts, and mana deficiency syndrome. In a world plunged into chaos, Lucas, a knight of the Eterk Kingdom, meets the amnesiac chantress (Choral) Iria. This encounter is the key that will lead to the truth of the world. Now, the story of salvation and demise begins.