The Strongest Man
Saitama is a guy who's a hero for fun. After saving a child from certain death, he decided to become a hero and trained hard for three years.
The Lone Cyborg
A monster is moving toward City Z, one that has been created by the mysterious organization known as The House of Evolution.
The Modern Ninja
A group of battlesuit-clad terrorists called "The Paradisers" appears in City F, and targets the fat-cat Zeniru, who in turn dispatches his bodyguard to defeat them.