The series had a pretty good premise. A pair of close siblings become even closer, too close for some. What could have been was a story that explored the taboo nature of their relationship. Whether it condemned or condoned it didn't matter. It could have even kept all of the sex.

But what we got was a story that got smuttier and smuttier every chapter with little regard to consequences.

Aki shows little regard for how her relationship with her brother could be perceived, or cared whether it was right or wrong. But Sora was far worse. Infidelity may as well have been his middle name because when he wasn't having sex with his older sister, he was having sex with some other girl.

Granted some of the events weren't necessarily avoidable. For instance, at one point he gets knocked out at a party and repeatedly date raped. He tells Aki about absolutely none of his sex encounters.

He shows absolutely no remorse for his actions. The story could have been trying to portray polyamory in a positive light, but it absolutely failed. The only time the story actually judges any of the character's actions, it judges the incest. Honestly, the incest is the least of it all. Aki leaves him out of a newfound guilt, and Sora is crushed.

Well, not so crushed that he won't have sex with the next girl that asks. But crushed. That is until he realizes what is truly important to him. And then promptly having sex with the next girl that asks. Anyway, the story ends on an incredibly unsatisfying note.

Sora thought he would get Aki back, because he really loved her and she really loved him. He was half right, or maybe not. There can be sad endings. There can be depressing endings. But this was bad. I think if the story was more focused on the actual romance and taboos of it all it would have been a lot better. A short story about a pair of siblings romantically loving each other before coming to terms with tragic taboos would have been much better. Instead the story went nowhere for too long and wrapped up in some of the worst and contradicting ways it could. Even a nice boat ending would have been better.

For a better portrayal that looks at the issue seriously, I would recommend Koi Kaze. The story is much more taboo, being about a pair of siblings with an age gap of 12 years. It doesn't ignore the taboos.

I would also recommend the similarly named Yosuga no Sora series. All three of the versions are quite different, the VN being a hentai, the anime being a borderline H series, and the manga being much more tame (it was published in a shounen magazine even).

At the beginning it seemed okay, as it started to get into the taboo subject of incest. It kind of showed the progression between loving another to lusting another, but it got very muddled towards the middle as it introduced more characters that seemed out of place. For example the girl that was an exhibitionist convinced the male protagonist to go on a date with her to pool where she basically paints a bathing suit on herself and goes and sunbathes nude and later in the chapter even tricks him to go an orgy with her where she loses her virginity to some random guy. The manga introduces her, I think, three times and the only reason I can think of why I remember her is because she did some nude modeling for the art club in one chapter. It dables in other subjects such as sexuality. Going towards the end, I could not even understand what the hell was going on as the manga started to have plot twists and such and continued to add sex scenes in practically every chapter, most of which had no real substance to the plot and were placed as if they were just there to appease the readers. So basically, don't read this if you want substance. If are gonna read it, better have some lotion and tissues at hand because it is basically a doujin with an "okay, but I don' really care" plot.

Some rants:
Why the hell does all the male protagonists from all the series done by this mangaka look like a fucking female? I understand Aki-Sora because twin siblings, but what the fuck is up with the other ones? The one manga where the guy can move his soul into inanimate objects is basically a chick, but with no hair. Also, why the fuck does all of his series need to have some sort of sexual exploitation? I get that it is subject that you would want to explore and let people know, but what the fuck dude? Seriously, can't you have done it a bit more eloquently or something?

So, everyone who read this, read it for an obvious reason.
Aside from that reason, this story isn't actually all that bad. Infact, it does get pretty emotionally engaging. The sex-scenes are sometimes in the right place, but many of them simply aren't necessary for the story. That said, I can't remember one that wasn't... hot for all the forbidden reasons.

So the manga was crap of the highest order and an adaptation of the hentai Oneechan no Onegai as well but we ALL read it for some reason. I even rated the hentai 1 point higher because it is at least honest and short.
The quality is bottom of the barrel for obvious reasons but the entertainment level is quite immeasurable so i may be able to recommend it for a good laugh. Just beware of bukkake, incestuous rape and orgys and a plenty.
The manga could have gone on if Akita Shoten (the masters of disasters) reclassified it as "real" porn but hey didn´t. Good i say because i was about to jump off too if it had gone on longer and his was a one time affair for me. Her (?) other near identical claptrap won´t grace my reading list. This comment section though is a must read and Badkarma´s is the best of course. Even the manga genre is locked. Amazing!
If you want to have real fun then read the chapters in reverse order as it made the same amount of sense to me as the "right" way. Finally how crazy is it that this manga is dedicated to a dead friend of the author.
I am truly at a loss of words for once.

... Last updated on August 8th, 2015, 7:53am

It's needed tragedy Tag...lol

It got a messed up ending...

not bad on the beginning, Scary on the middle, but sucks at the end...

There Parents Didn't Gave A Fuck, So, Why Should They ? - Crazy Logic and A Immature Ending.

... Last updated on March 7th, 2015, 5:13pm

First off, SEXY, secondly SE...no way in hell any of this is possible but it was still pretty entertaining. The plot is kinda interesting. There are three children in a family. One oldest sister and two twins. The "incest" is focused between Aki (Older Sister) and Sora (The boy of the twins) while Nami is a lesbian (For the most part)

Somehow Sora has the bitches lining up with his nervous/shy attitude, but that just makes it more fun when he is constantly seduced by multiple sexy girls.

This story kept me intrigued because ...
1. I wanted to see when Aki and Sora would be found banging and what they would do afterwards.
2. I wanted to see the next bitch that Sora would be seduced by.
3. I wanted to see seeeeeeex.
4. Boooobies.
5. ( .)(. ) ---lol

This is as close as you can get to being fully hentai. I do prefer this to hentai however But the sex scenes are pretty graphic and i'm not sure how much of a difference it would have been to sketch in some dicks and vagina's, but whatever, it still worked.

The only thing i found odd about this manga was the fact that Sora never got any of his bitches pregnant. (And that never seemed to be a concern)

8/10 ----- Really hot stuff...

After seeing some comments here, I wonder why there are so many people able to read manga but not genres and tags / categories on this side - as this manga delivers what the description says. Critics upon this, are just uncalled for. Critics reagrding the execution of the story however are justified by any means, specially with this story.
Nevertheless I can still recommend this manga if one doesn't held the expectation astronomicaly high. This manga is basically a hentai, so its primary focus is (who could have guessed) on the intercourse with random events leading to the obvious act. But if one is able to detach this 'hentai forced events' - let me call them that way - one will find a much greater meaning to the story: Notions of love relationships that aren't ment to be and the sentiment of unreached longig. Yes very overused topic in this genre indeed, but I don't go with the expectation of finding some kind of enlightenment in a mainly ero-oriented story. Still there were some few moments in the story were I paused and gazed upon the panel. This rare moments, which I liked art and story wise (on of them being the ending) is the reason why I can recommend this manga.
If one is interested in an average incest borderline-h story with overused topics but some intense moments, than this may be something for you.

... Last updated on September 8th, 2013, 2:23pm

Disappointing. There was some potential in the beginning for a complex story. Sora is pretty much used by everybody as a toy. He has no real will of his own and is pushed around whether its to do the cooking and cleaning or being forced to crossdress or as a sex toy. There was potential for some interesting psychological stuff there. Instead it becomes porn or as close to porn as you can get by omitting some anatomical details. Author could have talked about incest in society or other forbidden taboos in more detail, but instead its lightly touched on in what feels like a rushed ending. The best thing that can be said about this work was that I thought some of the art was very nice, but that's it.

Like BadKarma was saying below I started this manga hoping for a deep complex story of brother and sister love but it turned out to be a joke. Don't take this manga seriously because the main character doesn't give a shit and will stick his shit up anything that moves.

Everything I was gonna say has already been addressed by BADKARMA a few posts prior. It looks like the one good thing that came from Japan's child protection act was that it put this dull, lifeless series out it's misery.

I don't mind incest when it's done right, like Flowers of Evil or Koi Kaze (which imo tried too hard to be taboo), but Aki-Sora is just so lifeless and incoherent that it makes me very angry inside. Aki is the standard yamate nadeshiko nee-chan found throughout the hentai world. You know the one that bows bends to her brothers every beck and call, and is devoid of any personality or existence outside of her master's will. Sora is also the standard effeminate shota who's only purpose is act like a walking hard-on and engage in debaucherous sex w/ a naive youthful glee.

The main problem w/ this series seems to be that instead of focusing on one or two ideas it tries to cram all of the bad tropes, memes, and cliches from hentai into one short story and never properly develops any of it.

Oh well, the author sucks at h-manga as well, so I guess it's my own fault for giving her the benefit of the doubt.

... Last updated on February 7th, 2012, 11:27pm