one punch man 

The Apprentice's Journey Introduce a young hero who idolizes Saitama and seeks to become as powerful as him.

The Origins of Saitama Dive into the backstory of Saitama and how he became the unbeatable hero.

The S-Class Rival Introduce a formidable hero in the S-Class ranks who challenges Saitama's claim as the strongest.

The Limitless Menace Create a new villain or threat that seemingly cannot be defeated by Saitama's single punch.

The Hero Association Chronicles Follow the inner workings of the Hero Association, exploring the dynamics between heroes, the challenges they face, and the political intrigue within the organization.