Episode 13, One-Punch Man Wiki

quot;Return of the Hero" is the thirteenth episode of the One-Punch Man anime series and the first episode of its second season. Saitama and Genos are returning from the grocery store when they spot King, S Class Hero Rank 7. Tongue Stretcher terrorizes the populace but immediately surrenders when confronting King due to hearing King's Engine. A robot named G4 soon challenges King to a fight, but lets King leave with his excuse of going to the bathroom so they can fight at "full power". However, G4

Chapter 135 (Online), One-Punch Man Wiki

Chapter 35, One-Punch Man Wiki

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One Punch Man

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Tongue Stretcher, One-Punch Man Wiki

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Chapter 158 (Online), One-Punch Man Wiki

Saitama (One-Punch Man) - Wikipedia

Chapter 166 (Online), One-Punch Man Wiki

Chapter 25, One-Punch Man Wiki