Every single panel of these comics is traced from manga. Mostly an artist named Izayoi Seishin. Proof: http://imgur.com/a/bSLbm#0
Pegasus tried to claim he drew these on /co/ years ago and got laughed out of the room. To this day he still posts them anywhere he can and claims they're original.
If you want to see more of this style, search for Izayoi Seishin. There's plenty right here on e-hentai.
Holy crap I never knew these were traced or had a different source! Thanks @nottaj for informing though, it's nice to see someone sharing information about other good work