Lexia Seinkeil was part of a party of adventurers conquering uncharted territories, a party that included a girl known as the "Hero."

Possessing a "Healing" skill, she had formed a party with her best friend, Meikou the Hero. However, Act, another party member, informed her that she was no longer needed in the party.

With her heart consumed by despair, she was cast into the depths of the abyss. Unable to die instantly, she heard a "girl's" voice amidst the pain.

That girl's name was "Rukkinnes of the Crying Cat"—one of the Demon Lords who ruled this world.