Saitama ends up in Thedas. It goes as well as you expect.

(WARNING: This fanfic is very old, and it's abandoned for a reason) After Vaccine Man was defeated by Saitama, two heroes witnessed him killed Vaccine Man. The two random heroes reported this to the Hero Association. They decided to sent a S-Class hero to recruit Saitama to join the S-Class hero, but he refuses because he wasn't interested or not ready for recognition or fame, so they tried to beg him to be in S-Class but he still refuses, so they decided to put Saitama in C-Class hero, but in reality, he was actually an S-Class hero. This is also a fic where Saitama uses multiple Serious Series techniques, lol. (I admit, I love Saitama's serious techniques, even though they sound ridiculous and funny, they still sound pretty badass.) Disclaimer: One-Punch Man belongs to the Creator, ONE.

A young man named Takashi Kamihitotsu, he's a 28 year old man who just got fired from his rude boss for screwing up, even though he wasn't the one since he was framed. After he gets home, he decided to read a One Punch Man manga to cheer him up. It did make him kind of happy for a bit, but the pain is still there. He's been fired by many jobs in his life, so he couldn't take humiliation anymore and decided to commit suicide. But after that, a mysterious being, known as The Reincarnator, came and offered him to be reincarnated to another world. Takashi refused at first, but as soon as The Reincarnator said that he could've become one of his favourite characters in any manga or anime series, Takashi stopped it from transporting him to the afterlife and asked if it could really do that. The Reincarnator said he's not just an ordinary Reincarnator where it will reincarnate him into a random Isekai world, so Takashi thinks about it. He always wanted to be Saitama in the One-Punch Man world, so that he could not only one punch monsters but to be a true hero like Saitama, so he accepted it. What will happen to him? Let's find out! Note from The Writer: The cover of this fanfic doesn't belong to me. It belongs to ONE and Yusuke Murata.

Some of the S-class heroes including Saitama, Fubuki, Psykos, and Garou reacting to Saitama vs. awakened Garou. Note: by the way, this fight is the webcomic version which means I'm doing this first, and after that I will make Saitama vs. tatsumaki reaction (manga version or murata version), and finally Saitama vs cosmic Garou, soon they will be made. Disclaimer: I don't own opm, ONE owns opm. Plus the cover page of this fanfic, it doesn't belong to me too, it belongs to someone in DeviantArt which I forgot his /her username in DeviantArt but go check out his/her art. Also this is the part 1 of opm reaction.