Compilation for your reading pleasure.
Everything is done by CGrascal, I've only put everything together in one gallery.

Summary:
High school boy rapes President of the Moral Committee. She becomes his sex slave because Penis.
High school boy rapes Student Council President. She becomes his sex slave because Penis.
High school boy rapes Principal. She becomes his sex slave slave because Penis.
High school boy becomes Principal because Penis.

@ Gregorius: I totally agree with you. I meant for my comment to be funny. I personally found the plot hilarious because it was so ridiculous.

Base +5, Dex164 +7, Azul7 +7, Narutodiaz +9, Zeloso +8, Zero Angel +38, AsuraZero +10, Leviathan +14, airhead +15, udizzle +4, sandyface +12, bondmata +8, dakight +10, and 131 more...

Has anyone ever read Medaka's Box? The two main character heavily resemble two characters from this manga. Also a principal can't authorize a change in uniform like that or to make the school an all girls school. WTF.

Base +1, tormagnum -9, Capi duffman -14, MoonShine -9, eotaku42 -7, vDen -9, blunt005 -6, CarmeloAnthony -6

@ apotropaic: Keep in mind that you're talking about the plot to a hentai manga...

...when it comes down to it, "because penis" is about the most logical reason you can possibly come up with. I say 'embrace it'; enjoy it for what it is.

Base +27, airhead +15, tormagnum +9, dirtyhairry +17, HankFromHell -5, Guestoid +9, HodorHodor +6, NailB +20, TylerWolf +7, Anony12788 +13, ridvid1313 +4, pervido +18, LuckyStar9432 +8, and 39 more...

Moral of the story: if you have a sex stamina of a mythological creature and the personality of a troglodyte, you can be anything you want!

Base +7, Guestoid +9, TylerWolf +7, Flaphinfluff +7, AncientPhoenix +8, Cha0sC0ntr0l +9, Maguswaffy +7, Cessc -6, Ilia_ +10, Xenon +12, nothingness +8, drakejr23 +10, m42a +19, and 39 more...

villain sue with a lol plot. not that I'm complaining though.

Base +13, blunt005 -6, AsuraZero +6

This thing was awesome because hentai logic is awesome! =D

Base +5, politas +8, TylerWolf +7, dersied -10

Ilove dark skinned girls in hentai.

Base +1, TylerWolf +7, falker36 +9, blunt005 +6

What happens when the douche from an NTR Manga becomes the protagonist of his own story?
He rapes his way to being Principal of a school, kicks out all the guys, and makes the school into his own Slave Harem.

And it is glorious to read.

Base +10, TylerWolf +7, Anony12788 +13, Nekohunter33 -1, BlickWinkel +9, LoneHero33 +10, Tenchi Ryu -7, roelling +6, GeneralSky +6, Maguswaffy +7, vastolordzen +6, Cessc +6, Kanti-kunj +9, and 30 more...

The broken english only made the already moronic plot that much more absurd.
However, logic aside, it still plays pretty well to a number of fetishes. I just can't help thinking that sometimes the authors are actually pulling these retarded plots as a way of insulting the very people that enjoy male domination to this degree.
As in: "See how stupid this is? This is how stupid your fetishes are"
The way I see it though, as long as these fetishes stay in the realm of fantasy and no real person is actually forced into slavery it shouldn't matter. It seems a little rude to their readers if that is indeed the case.

Base +10, Nekohunter33 +1, BlickWinkel -9, l337t3r -8, Granten +11, Cessc -6, IntarwebzFTW -7, crazymagic -10, Xenon -12, Palaxius +20, Linksaver -6, roberts123 -4, eotaku42 -7, and 6 more...

lol at all the ppl who don't realize this comic is supposed to be funny / ridiculous

Base +5, Maguswaffy +7, Palaxius +20, remic123 +7, JSTLLWLL +6, gstxtd -2, who71 +11, blunt005 +6, Riyu1940 +7, necrosis527 +8, bowzie +6, dersied -10

Sooo....if my penis was a centimeter longer than his...I could rule the school!, Nay, the whole world!

That is until a heterosexual male stands in my way :/

Base +6, ZethValentine -7, blunt005 -6, dersied +10

Hahaha exciting in the beginning, funny at the end.

Base +8, ZethValentine -7, blunt005 +6

>taking porn seriously
that aside, the moral of the story is: PENIIIIIIIIOS

Base +7, Maguswaffy +7, Palaxius -20, Nanaya Kawashima -6, eotaku42 -7, ZethValentine -7, blunt005 +6, CarmeloAnthony -6, na-mi-da -4, AsuraZero +6, dersied -10

Ridiculous, but that's part of what makes it so damn enjoyable and funny, lol..

Base +19, ZethValentine -7, blunt005 +6, AsuraZero +6

And then he ran for president.

Base +5, Ilia_ +10, Xenon +12, nothingness +8, remic123 +7, Ficfactor +9, vDen +9, falker36 +9, Cessc +5, blunt005 +6, robedob22 +6, Blaze_fire +7, LordDratsab +6, and 12 more...

You know technically, this seemingly nonsensical plot is actually a pretty typical plot for Japanese "school of hard knocks" kind of stories. A new student is transfered to school aiming to conquer it, he fights off factions and brings them onto his side and wins through his own strength despite a bit of struggle. In this, it's all played out jokingly of course, but it more-or-less holds true to that kind of formula. For a non-porn example, Crows Zero and, hell, NARUTO follows the same kind of plot.

Base +7, Linksaver -6, galaxymaster10 -9, Nanaya Kawashima -6, eotaku42 -7, blunt005 -6, CarmeloAnthony -6, neckbreak -9, Jo Umero +6, rorschachsface +8, bowzie -6, Shakenbytheviolence +6

Hey it's Bakugou from My Hero Academia

Base +7, necrosis527 +8, sanduichedosul +7, AsuraZero +6