Ep. 1: Saitama reflects on the loss of meaning despite his overwhelming one-punch hero strength
Aired on October 5, 2015

Saitama, a hero who originally pursued the profession for enjoyment, decided to train rigorously for three years after saving a child from death. He has since become so powerful that he can defeat any opponent with a single punch. However, despite this overwhelming strength, he recently feels that he has lost something even more important in exchange for his abilities. This narrative explores his internal conflict regarding the cost of his power and his current state of mind as a hero.
Episodes
- Ep. 1 · Saitama reflects on the loss of meaning despite his overwhelming one-punch hero strength
- Ep. 2 · Genos confronts a monster from The House of Evolution near City Z
- Ep. 3 · The Obsessive Scientist explores Dr. Genus's dangerous artificial evolution theories and his interest in Saitama.
- Ep. 4 · Saitama intercepts the wealthy Zeniru's bodyguard during a clash with the Paradisers in City F.
- Ep. 5 · Saitama seeks recognition by joining the Hero Association after three years of anonymous hero work.