"Bastard Sword" is the story of Flolu the secret child of the goddess Gaia. With the ability to communicate and control all deadly monsters. She was cold-blooded and decisive, even Gaia didn't want her immense power to destroy the human world. So she has been sealed in a land far away from people.
Thousands of years have passed. Humans have developed tools that take advantage of resources.
When the natural world is slowly destroyed by human hands, Flolu and her minions are awakened by the unknown force. Her only mission. To eliminate humanity.