Following his loss, Sonic is plagued by repeating nightmares and flashbacks of the incident. To regain his composure and strength, he retreats into a deep forest to train.
This special is often included in the home media releases (Blu-ray/DVD) of the first season. You can find more details about its production and release on the One-Punch Man Wiki . One Punch Man Specials Episode 3
The episode ends with Saitama and Genos casually eating bear meat hot pot at their apartment. Meanwhile, Frank wakes up to find a massive path cleared through the forest by a single punch, and Sonic watches the city from afar, his resolve to defeat Saitama renewed. Where to Find It Following his loss, Sonic is plagued by repeating
The "One Punch Man Specials Episode 3," also known as the third OVA (Original Video Animation) titled explores a side story focused on Speed-o'-Sound Sonic as he struggles to recover from his humiliating defeat by Saitama. Story Summary You can find more details about its production