The story revolves around Saitama, a powerful hero who can defeat his enemies with just one punch. After becoming bored with his life, Saitama decides to become a hero and meets Genos, a cyborg who becomes his disciple. Saitama's incredible strength is recognized by the Hero Association, but he is not taken seriously due to his lack of effort and nonchalant attitude.
As the series progresses, Saitama faces various villains and monsters, including the Deep Sea King, Garou, and the Monster Association. He also meets other heroes, such as Mumen Rider and the S-Class heroes, including Blast, the strongest hero in the world.
Throughout the series, Saitama's true strength is often underestimated, and he is frequently overshadowed by other heroes. However, he consistently proves himself to be the strongest hero, effortlessly defeating his opponents.
The story also explores the theme of heroism, with Saitama's non-traditional approach to being a hero often conflicting with the expectations of the Hero Association and the public. Despite this, he remains committed to his values and continues to fight for justice in his own unique way.
Here are the key facts extracted from the text:
1. Saitama is the protagonist of the story.
2. Saitama had a boring job but became a hero after saving a boy from a crab man.
3. Saitama trained for three years to become a hero, doing 100 squats, 100 push-ups, and running 10 kilometers every day.
4. Saitama became the most powerful and invincible man in the world.
5. Saitama went bald due to his intense training.
6. Saitama meets Genos, a cyborg who wants to become stronger and avenge his people.
7. Genos and Saitama team up and defeat various villains.
8. Saitama and Genos join the Hero Association, where they meet other heroes.
9. The Hero Association is divided into classes, with Class S being the highest rank.
10. Saitama becomes a Class S hero despite not being recognized for his strength.
11. Saitama and Genos face various challenges, including aliens and monsters.
12. Garou, a former disciple of a martial arts master, appears and seeks to become a villain.
13. Saitama and Garou have a rivalry, with Garou seeking to defeat Saitama.
14. A martial arts tournament is held, where Saitama participates under a pseudonym.
15. The tournament is interrupted by a group of monsters, who are part of a society led by the King of Monsters.
16. The society of monsters seeks to take over humanity and eliminate the Hero Association.
17. Saitama and other heroes face off against the monsters in a final battle.
18. The anime ends with Saitama defeating the monsters and saving humanity.