If you have nothing else to do and just wants to have a good and easy (I mean very easy) time reading, then read this. Of course it's drawn by Murata (Eyeshield 21) so you can expect that the art is top notch especially the fight scenes.

This, for me, is what a great gag manga should be. Full of stupid non-sense crap but still beats the hell out of you and doesn't get old easily. Plus an exclusive bonus of an excellent art.

If any manga deserves 10 out of 10 , this is the one ! Awesome art, awesome plot and awesome protagonist . This manga is a fresh diamond , if you are into gag mangas , this manga is the correct one for you .

Incredibly and unpredictably awesome in almost every respect. Gonna sit on my arse and wait for more awesome to flow my way, because this is one hilarious manga like I have never seen before.
Pacing's a bit terrible later on, reminds me of Bleach in that way, but meh. Still great.

... Last updated on March 27th, 2013, 9:28am

I'm glad that I read this manga because it is hilarious. I'm shocked like everybody. I love how this gag manga is a parody of shounen mangas. Reading mangas like Naruto, Bleach, DBZ, etc., its really refreshing to read a manga thats making fun of overpowered main characters in shounen mangas. The only downside for me is that there's no plot for this story but it could easily have one.

I don't think a word to express how good this manga is exist yet. It's funny and yet cool and bad*ss at the same time. I LOVE IT! The fight scene is definitely a first for me I've never seen any manga that have fight scene like this. I thank both the author and artist for creating such masterpiece.

This is seriously one of the best manga I've read in a while. Think of Dragonball Z, except the exact opposite of Dragonball Z since I'm pretty sure that's what it's trying to parody. Hilarious Premise, Amazing, top notch art, and for a manga about a guy who wins every battle in one punch, the action scenes still manage to be some of the best I've seen. Especially chapter 17, I've never seen something done like that before. 10/10, totally recommended.

Funny + Great Art + Action... and an utterly stupid story line but so intricately well lain by the author, a reader will get addicted from first chapter without any chance of recovery (minimum caveat: must like action/comedy). Completely fresh.

Great stuff. Think total opposite of the Goku VS Frieza or like the DBZ parody episode of Gintama where Hijikata is searching for a place to smoke and kills Brieza and Cero in a single hit.

when the first chapter got out i tried reading it, didn't expect much since it was a gag but for some reason it piqued my interest. . then the second chapter came and third. . After that i was utterly HOOKED! This manga has Lamest poor excuse of a lead character that ever crawled out of bed in the morning on a Sunday. . but the twist is that he is overly powered to the point that all his enemies are defeated as the title says in one punch. . And he doesn't have any I fight to protect my friends or for love and peace or any of that bull crap. . He's just a hero as a hobby that lives like any other normal person. . Give this a try and i guaranty you will enjoy it. . this manga has full of potential I just hope it is realized properly. .

... Last updated on August 2nd, 2013, 10:53pm

Yes. Finally. Finally we get an awesome gag parody action manga. It sure has been a while.

The art is great and fits the gags and general mood of the series like a glove. The characters are hilarious, the pace is relentlessly funny, the world is full of potential...

I can't say much else... If you like Comedy+Action read this, trust me.