One Punch Man

I just read One Punch Man by One it was a good book. This book is about a man named Saitama who is bored of his life and becomes a hero for fun, But the thing is he isn't having fun because any enemy he punches is killed in one punch. It all started when he saved a boy who was getting chased down by a crab monster at this time Saitama wasn't that strong so he barely took it down. After that he trained so hard his hair literally fell off. After that point he was an unstoppable hero. Then he got in a fight with this mosquito lady that can control mosquitoes. That was his first true villain and someone else was fighting it before him. That persons name was Genos and he was about to die and he's a cyborg. The thing is though is that he saved Genos and Genos became his side kick. Then when they became acquainted they got attacked by the beast king and his minions along with a cyborg monkey. They were defeated by the new team up of Saitama and Genos