Where can I find the original One Punch Man webcomic online ?
One Punch Man is an ongoing web-comic of Japan that was created by Pseudonym One. He started its publication in early 2009 and now it’s a big hit. The original site for reading One Punch Man is http://galaxyheavyblow.web.fc2.com/. Here you will find the whole content in Japanese. You can also read the translated version of this. You can find original One Punch Man on the below sites:
Manga is a popular site for these web-comics. You may read the complete series from this site. Thirteen volumes have been released of this comic. Manga provides fully updated volumes of the comic as soon as it is published.
Anime is another popular source of One Punch Man. This is the most popular art form in Japanese. The series is licensed in North America, United Kingdom etc. the original comic is dubbed in English and published on this site. The series was aired in early 2016 on this site. It provides a huge collection of the latest updates of the One Punch Man.
Other sources like QManga, MangaPanda, etc. are also popular for One Punch Man. You can find the translated versions of original comic on these sources.