Season 1
Saitama is a hero who only became a hero for fun. After three years of “special” training, though, he’s become so strong that he’s practically invincible. In fact, he’s too strong—even his mightiest opponents are taken out with a single punch, and it turns out that being devastatingly powerful is actually kind of a bore. With his passion for being a hero lost along with his hair, yet still faced with new enemies every day, how much longer can he keep it going?
Episodes
1 The Strongest Man Oct 5, 2015 
2 The Lone Cyborg Oct 12, 2015 
3 The Obsessive Scientist Oct 19, 2015 
4 The Modern Ninja Oct 26, 2015 
5 The Ultimate Master Nov 2, 2015 
6 The Terrifying City Nov 9, 2015 
7 The Ultimate Disciple Nov 16, 2015 
8 The Deep Sea King Nov 23, 2015 
9 Unyielding Justice Nov 30, 2015 
10 Unparalleled Peril Dec 7, 2015 
11 The Dominator of the Universe Dec 14, 2015 
12 The Strongest Hero Dec 21, 2015