It has been previously announced that the hit comedy-action anime, "One Punch Man" is having a second season and the production has already started. The plot for the upcoming season is still under wraps but fans can't help but speculate on what will be the focus in the next chapter of Saitama's hero adventure. Through scouring forums and internet discussions, the most prominent theory is that of Garou and the Hero Hunter Arc from the manga.
Last season ended with a bang where Saitama faced an invading spaceship full of powerful aliens trying to conquer Earth. The top-ranking heroes from the Hero Association was featured including Bang who is among the few persons that knew Saitama's full capabilities. In one episode Bang mentioned a former student of his named Garou and how he banished him from his dojo after losing control and hurting his other students.
According to Korea Portal, anime fans are really excited to see the matchup between Saitama and Garou whom the Hero Association dubbed as the Human Monster. Basing on the chronological events in the manga, the next story arc will see the introduction of King, a rank 7 class-S hero. It will be followed by the Human Monster Arc where Garou was introduced formally.
Amidst all theories and speculations, the show runners have remained quiet and no confirmation was officially announced regarding the details of "One Punch Man" Season 2. Though some of the theories are backed up by reliable materials, fans are advised to take everything that they learned from the forums with a grain of salt. However, that doesn't change the fact that fans are super excited to see season 2 like the My Anime List user named Ivoria, who claimed that she is excited to see her favorite character, Speed-o'-Sound Sonic.
As for the release date of "One Punch Man" Season 2, there is no official information regarding the matter as of the moment. Let's all just wait patiently for the Caped Baldy to get back in action.