The story of Saitama, a hero that does it just for fun & can defeat his enemies with a single punch.
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| Title | Name |
|---|---|
| Season 1, Episode 1 | The Strongest Man |
| Season 1, Episode 2 | The Lone Cyborg |
| Season 1, Episode 3 | The Obsessive Scientist |
| Season 1, Episode 4 | The Modern Ninja |
| Season 1, Episode 5 | The Ultimate Master |
| Season 1, Episode 6 | The Terrifying City |
| Season 1, Episode 7 | The Ultimate Disciple |
| Season 1, Episode 8 | The Deep Sea King |
| Season 1, Episode 9 | Unyielding Justice |
| Season 1, Episode 10 | Unparalleled Peril |
| Season 1, Episode 11 | The Dominator of the Universe |
| Season 1, Episode 12 | The Strongest Hero |