The story revolves around Atlet Mayer, who claims to be the strongest man in the world. He fights his way through a tournament to be chosen as one of the six heroes who will save the world. However, he is not chosen and is instead sentenced to death.
A mysterious maid, who is actually Princess Nobody Tania, helps him escape. As they journey together, they meet Fremm, a half-human, half-monster girl who is also one of the chosen heroes. Fremm is initially cold and distant but eventually warms up to Atlet.
Together, they meet the other heroes, including Gol 2, Chamot, Mora, and Hans. However, things take a turn when it is revealed that there are seven heroes instead of six, and one of them is an impostor.
As they try to figure out who the impostor is, they discover that Mora has been manipulating everyone into thinking that Atlet is the fake hero. However, it is later revealed that the real impostor is actually the princess, who has been working to bring about a reconciliation between humans and monsters, even if it means sacrificing 500,000 humans.
The princess disappears, and the heroes are left to find her and stop her plan. Meanwhile, Atlet is badly injured and is taken care of by Fremm. As he recovers, he and Fremm share a tender moment, and Atlet is asked to join the heroes and work together to stop the princess.
Here are the key facts extracted from the text:
1. The story begins with a duel between two characters in the presence of the gods.
2. The winner of the duel will face the winner of the last championship, Princess Nobody Tania.
3. A man named Atlet Mayer interrupts the duel and challenges the two opponents.
4. Atlet Mayer is the strongest man in the world and has come to prove his worth.
5. The guards try to get rid of Atlet Mayer, but he defeats them using his needles.
6. Atlet Mayer is joined by a girl who claims to be a maid, but is actually Princess Tania.
7. The princess and Atlet Mayer escape and begin their journey to find the six heroes who will save the world.
8. Along the way, they meet a girl named Fremm, who is one of the six heroes and has the mark of the six petals on her hand.
9. Fremm is the daughter of a monster and a human and was trained to use her powers as a weapon.
10. The group meets another hero named Gol 2, who is fighting monsters with his partner, Cee Tania.
11. The heroes gather at a temple, where they discover that there are seven heroes instead of six.
12. They realize that one of the heroes is an impostor and begin to suspect each other.
13. Hans, one of the heroes, is revealed to be a professional murderer and is suspected of being the impostor.
14. Fremm and the protagonist team up to escape from the other heroes, who are trying to kill them.
15. The group discovers that the seventh hero is actually the princess, who has been manipulating them all along.
16. The princess reveals that she wants to reconcile humans and monsters, but at the cost of 500,000 human lives.
17. The heroes try to stop the princess, but she disappears using her monster abilities.
18. The protagonist is badly injured and is given medicine by Fremm to save his life.
19. The protagonist gets up and agrees to team up with the other heroes to kill the demon god.
20. The story ends with the heroes setting out on their journey, but with the knowledge that there is still an impostor among them.