Lemmius Alzen Furvus was a normal civilian lived on a small village that was destroyed ten years ago due to the assault of the users. He was saved by the one of the on the entire history, Minerva.

—ʺI welcome you. Oh young man, who had an unknown capabilities. For a thousand years, this world, which is full of greed and hatred, needs someone like you to become its ruler! Guide our world to the righteous path, and release us from our fate of ruin!"

The [King], the Ruler of Everything. Unbeknownst to everyone, Lemmius defeated the Six Elemental Gods/Goddesses and became the first < King> in the age of 12. But even now he is 17; he was still not able to avenge to the culprits who assaulted his village.

Lemmius' story is where he changed his name into 'Lezirth' and became a student on the academy owned by Minerva for the sake of participating on the < War Festival> and finally get his revenge against the users that target the event.

Reuniting with his childhood friend, Athena Edinburg, the only princess of the Empire, his life surrounded by the noble es from the academy is about to unfold!