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Demons invaded the tranquil world. Numerous people died as a result of their inability to fight. Fortunately, one individual emerged. Many demons were fought and defeated by one human, known as the "Hero". However, he vanished one day. Despite his disappearance, humanity managed to endure thanks to the Brave One's sturdy barriers. I am the offspring of the Brave One. Tragically, both my father and mother disappeared. I've had a terrible existence in the slums, striving to survive. One day, I unexpectedly received something called a system. With this system, I hope to grow stronger and find my missing parents... but where did it come from? Should I even care?

Table of The Birth of the Strongest Demon

Table of contents

Volume 1