http://www.dlsite.com/maniax/work/=/product_id/RJ111601.html

I can't find any information about this artist: is he a phantom, or is he just not that popular? He's definitely not new to the business (unless at least 2010 is considered new). Also, that fatboy is really creepy. And the art's not all that great.

Base +24, 2hou4you +1

love his work and plot, anymore from this group? i know there are some that is not available for downloads :D

Base +8

How exactly is this a parody of portal?

Base +12, malgod +11, fierylava12 +8, Dark Gale +1, ExecVienna +3, Captian Katsura -7

@Reslain

The Portal tag is used if portals are used in the media, not really if it's a parody of the game Portal.

Base +8, Crushermach3 +9, George642 +8, Captian Katsura +7

Unfortunately, you can't just tag "portal" instead of "parody: portal".

I find the thought of this doujin being a REALLY "artistically interpreted" parody of Portal funny, so I'm fine with it.

Base +8, Captian Katsura -7

Anyone know what the last panel says?

Base +9

Does anyone know if there are anymore works involving similar themes?? Doesnt have to be by this artist. Thx in advance!

Base +1, leonheartt +7, ajdxnl +4

Story about boy gained special power "Vagina Gate" to any female. No mind control here.

Base +10, Captian Katsura +7

WE NEED MOAR OF THIS

Base +3, Bane13 -32, Nehemz +8, Epic Gamer Boy -8

I can see this sort of scenario going horribly wrong for the guy. What if the woman puts something sharp (or poisonous) in her holes to stop him from using her? There's no way to tell what's been done by just having access to their bottom.

Base +6

There are a handful of hentai manga that fare like this. But they are usually mixed in with voodoo, possession, and the like, but you'll find similar stories under the "wormhole" tag. The most similar hentai manga I can think of that's like this is 'linked mirror' by taropun, and uncrowded train molester warning by Taiyaki ...

Base +6