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Aki Sora revolves around Aki Aoi and Sora Aoi, a pair of close siblings who have shared an intimate bond since childhood. During their coming of age, they each come to realize the true depth of the love they feel for each other and consummate that love in secret. They keep their younger sister, Nami, Sora’s twin in the dark about their new relationship. Nami, clueless of what is happening in her household aims to set her brother up with her best friend, Kana Sumiya. Despite these relationships Nami seems to have feelings for someone near to her too but keeps them secret.

Note: The first and third volumes will no longer be printed following July 2011 due to the Tokyo Youth Development Ordinance bill due to its depictions of incest.


Related Series
Oneechan no Onegai (Alternate Story)

Associated Names
Aki Sora

Groups Scanlating

Latest Release(s)
c.30 (end) by Sunset Chaps over 6 years ago
c.29 by Sunset Chaps over 6 years ago
c.27-28 by Sunset Chaps over 6 years ago
Search for all releases of this series

Status in Country of Origin
6 Volumes (Complete)

Completely Scanlated?

Anime Start/End Chapter
Starts at Vol 1, Chap 1
Ends at Vol 2, Chap 8

User Reviews

7 topics, 58 posts
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User Rating
Average: 6.4 / 10.0 (756 votes)
Bayesian Average: 6.41 / 10.0
 13% (101 votes)
 9% (70 votes)
 12% (90 votes)
 22% (163 votes)
 13% (98 votes)
 9% (67 votes)
 7% (50 votes)
 3% (25 votes)
 2% (13 votes)
 10% (79 votes)

Last Updated
April 10th 2016, 5:39am PST



Category Recommendations





Original Publisher

Serialized In (magazine)
Champion RED (Akita Shoten)
Champion RED Ichigo (Akita Shoten)

Licensed (in English)

English Publisher

Activity Stats (vs. other series)
Weekly Pos #446 increased(+36)
Monthly Pos #560 increased(+67)
3 Month Pos #712 increased(+93)
6 Month Pos #755 increased(+47)
Year Pos #770 increased(+28)

List Stats
On 1690 reading lists
On 676 wish lists
On 1711 completed lists
On 153 unfinished lists
On 378 custom lists

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Forum Posts
I hate the ending... about 1 year ago
Chapter 26 over 3 years ago
Is this hentai over 6 years ago
Chapter_16. "Nice boat" Ending I feel over 6 years ago
missing chpts over 6 years ago

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User Comments [ Order by usefulness ]

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They Were Raised Together and They Are Blood-Related; No Fakecest, But a Wonderful, Realistic Portrayal of a Forbidden Relationship   
Rating: 7.0 / 10.0
by Seijurou
November 29th, 2011, 12:40am
This is a great, mature manga. Each chapter has a deep meaning that makes one contemplate. Read it slowly with an open mind, and you will not regret it. Remember, it is the author that decides what happens, not you, a right she has since she was the one that created the characters and the setting. There are not a lot of stories as well-done as this one.

The main male character is too feminine for my taste, and yes, the way the characters are drawn from a distance does make them look a little fat sometimes, but how almost each chapter leaves one thinking is simply amazing. Although the story may appear stand-alone or thw most part, the plot does progress, without the reader feeling or even needing it to, a sign of an expert mangaka.

Somebody complained that the protagonist, Sora, does not feel guilty after engaging in sexual relations with other girls, that he and his sister, Aki, do not have hesitation towards being intimate with each other, and that Aki does not feel special, however, I strongly disagree.

Every time that Sora was involved with another girl, it was because either he was forced, begged, or cornered. Remember, he was pushed to be with Kana, his shy classmate who likes him, by his tough twin sister, Nami, and he was officially available. It is not like Sora could just say, 'Sorry, guys, you see, my sister and I are "together," so I can't see anyone else.' At first, he thought that being with Aki is wrong, but he just could not answer her question, 'Why?' Their relationship's being taboo and how long it would last is also explored multiple times, such as in the chapter The Red Thread of Fate, where they think about having sex while tying a thread to their fingers at a temple, and the legend says that the couple is doomed if it rips. Sora also has feelings reserved for Aki. She occupies his thinking. Satsuki Runa, the girl who goes to the same school and lives in the same building as Sora, notices a few times as well that there is a girl that he loves. Further, Aki displays signs of jealousy of Nami and Kana sometimes. However, what she does not know can not hurt her.

... Last updated on January 28th, 2012, 1:19am
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Holes! Holes everywhere! Like someone took a machinegun to it.   
Rating: N/A
by That2ndGuy
October 6th, 2011, 7:31pm
I was going to say something mildly intelligent, but it appears Badkarma beat me to the punch and in a much bigger way. I don't think a professional could have written it better, and I'm quite critical of others spelling, grammar, etc.
Basically, there are plot holes a character flaws up the wazoo. The plot is that of a porno where the pizza guy delivers food and immediately gets his dick sucked upon opening the door, except the delivery boy and customer are related. I can take random comic boxes--not even the whole strip--from the Sunday newspaper every week and make a better storyline. At first, I was entertained (yea, yea, I like incest, but I'd NEVER do something like that in real life, blech *shivers*) and it seemed like it had promise. Then after seeing the same sex scene over and over, where nothing changed mentally (other than "it's not so bad fucking my sister") and they only explored more generic positions, I grew bored. This happened within the first 10 chapters. Like Badkarma said, he felt no guilt, or any emotion at that, other than the usual affection that comes with fucking your sister (lol, what am I saying... you get the idea, I hope). The only part that was half-way decent was Nami's jealousy towards Sora for fucking the chick she likes. It's a poor read and gets repetitive fast. Maybe too fast of development in every category. This probably would have been better as a oneshot. Sora has child-bearing hips. I can't believe it got serialized, but I supposed most people don't read it for the story bigrazz
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Rating: N/A
by whitespade
August 15th, 2011, 4:23pm
im compelled to write a comment just to say your comment is AWESOME

in subject of akisora - yeah, its porn with barely coherent plot. sora is the wimpiest fucker there is. but i suppose being wimpy is the selling point. hey, he got the girls dont he?
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Good as Hentai and manga   
Rating: 10.0 / 10.0
by shamful7
June 13th, 2011, 9:38pm
Ok I consider this to be a hentai with a story simply cause I see a huge variety of emotions that usually dont go well with hentai. I also believe that something is gonna happen soon that will cause everything to start crashing down for the characters
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You've been trolled! You've been trolled!   
Rating: N/A
by Badkarma
May 1st, 2011, 8:49am
What is Aki-Sora?

The first four chapters are actually pretty good. Maybe a shade on the porn side, but we see an actual plot begin to develop.

Right off the bat, we're given the back story of our hero, an effeminate, timid boy who is dotted on by the heroine, his sister, to whom he has a clear and obvious complex over. We're also introduced to Sora's fraternal twin, Nami, who doesn't appear to be particularly fond of her brother, but also doesn't seem to hate him. More importantly, she looks to be a completely normal, "incest is wrong" twin sister. Nami's friend, Kana, is your stereotypical bespectacled shy girl with a crush on our hero.

Great! And at this point, I may have to warn of spoilers, as there may be a few below, but looking though the other comments, it's practically "It was his sled" territory by now and I'm not reveling anything critical outside of chapter 4. If anyone cares enough, I'll throw a giant spoiler box over it, but really, there is no plot to spoil in Aki-Sora, since there is no plot... Actually, on second thought, I'll put in a spoiler box anyway. I don't wanna be "that guy", however I insist not much is spoiled.

Spoiler (mouse over to view)
Ahhh, chapter one. Aki and Sora do the mattress dance, and you think: "Alright, cool. Looks like we'll be skipping the usual 20 chapters of 'But we can't!' and get right into the action and drama that will come when facing the taboo of two blood related siblings attempting a sexual relationship."


Chapter two comes out and we get a nice glimpse into the mind of Nami as well as a healthy dose of yuri. And you think: "Ohhh, I see, I see. Nami's somewhat harsh attitude towards her twin is because she loves her friend who has a crush on her brother. Hmmmm... a complex formed through jealousy over something Sora has no control over: his gender. An "as long as my beloved is happy" plot with twinges of regret and envy. Can't wait to explore that."

What could go wrong?

And so, chapter three rolls around, and it gives us some porn disguised by a cute back story with sprinklings of Sora doubting the line he's already crossed. As you remember how slender Sora's naked hips were while he was crushing his sister's internal organs, you briefly wonder why the author adds thirty pounds to his waste-line when he's wearing clothing.

Wincest is best!

Then 4.0 happens. Here, we're met with some ho who gets her rocks off exposing herself in public venues. Well... this might be interesting. And it is! But our hapless hero is swept up in infidelic sexual acts!

Oh no! How will he ever face his beloved Aki again!?


Wait, what? H-he didn't even have a TWINGE of guilt!? Nothing!? W-well, maybe that was just a side chapter. I bet in the next REAL chapter he seriously contemplates the guilt he certainly must feel over his actions in chapter 4.0.


Chapter five.


Wait! Wait! Wait! Timeout! Did 4.0 even happen!? Was that some kind of alternate reality? Am I to believe that's not considered cheating in Japan? Or am I to believe that the cute and effeminate, sister-complex shota-boy with broader hips than his female twin, doesn't understand the concept of fidelity? Chapter five didn't have the answer I was looking for. M-maybe chapter six will get us back on track.

Yes! Onward to chapter six!

Chapter six.

FFFFFUUUUUUUUUUUU!!!!!!!!!!!!!!!!!!!!! WHAT THE HELL, HERO!? ARE YOU A FUCKING BLOW UP DOLL!? GET UP MAN! GET UP! Oh good, he came to his senses. Now all he has to do is get the hell outta... HUH!? WAIT! WAKE UP! SNAK-, I MEAN, SORA, NOOOOOOO!!!

Seriously, I couldn't give a damn what the ho is doing, who she is doing it with, how many STD's were involved in the making of this chapter and how many visits to the Maury show she'll have to make in order to find her "baby daddy". Don't care. What she does is her business.

And this may sound odd, but I don't really care that Sora heads down the path laden with barbs. Actually, you're almost to expect it. This is supposedly a story about an incestuous relationship after all, and it's a common plot point to portray one of the characters as unsure or uncommitted to his/her taboo choice, ultimately leading to mistakes that can't be undone without dealing with the major ramifications of his/her grand self destruction.

But that's the problem. He cheats, and cheats, and cheats and is never faced with any kind of regret or guilt toward betraying the supposed object of his affection, nor any real self-reflection regarding the taboo relationship they share. Aki becomes just another girl with an impressive axe-wound between her legs and Sora's got an axe to grind. And grind. And grind.

We look to chapter seven expecting to see a mind-screwed Sora who'll never be able to look Aki in the eye again, but we don't see that. He doesn't think twice about it. In fact, he gets a titty-fuck. *faceplam* This is the point where I know for certain that I've been trolled. I went to ITOSUGI Masahiro's profile page fully expecting an enormous picture of trollface as the author avatar. The brief bio simply containing the words "u mad?".

What's the point of even writing a story of this nature when the protagonist has virtually no mental or physical consequence for any of his actions? Chapter 8? Please. He's just doing his favorite blow-up doll impression... again. Later he says he was scared of her. Frightened people don't get erections and even in the event that he did get it up, you can tug and tug and tug on that little guy but he'll never cum a fucking bucket. Sorry, folks! The human penis doesn't work that way! Sure, you could use the stalwart, grade-school defense of "this is manga", but when you attempt to weave a story with "drama" and sex, I at least expect a certain level of realism (5-gallon cumshots notwithstanding). He liked it. The end.

Without a valid plot, Aki-Sora looses all it's thrill or credibility. In the beginning there's a thrill because you wonder if they'll be caught and what problems will occur when they finally do get busted. But later, rampant cheating aside, the Aki X Sora scenes will put you to sleep and it's mostly because she loses credibility as his sister. If they don't think about the moral boundaries they're crossing as they copulate like endorphin induced rabbits, then she becomes his sister on paper. It's like watching a porn movie titled "Taboo Bro&Sis Incest! Vol. 37198" starring the blackest dude you've ever seen in your life and the palest redhead in the history of the universe. NOT BUYING IT.

To which you may say "So what? If the author says they're siblings then they are!" Incorrect. It's the burden of the author to sell the idea that these two are, in fact, siblings. She portrayed that quite nicely in the beginning, but failed to maintain the status quo throughout the story. If you want an example of a work that sells the idea that 'x' and 'y' are full blood siblings completely, go read or watch Koi Kaze. Basically, any story that revolves around incest needs at LEAST one person who thinks it's disgusting and wrong and has brains enough read between the lines. Or like I said before, an unsure partner with a conscience. Or both. If you have NEITHER, then what's the point? Why even bother with "incest" if you're not going to explore the taboo?

Where are you my shining moral compass character? Nowhere.

I mean, he's banging his "sister". So what? By now, if someone were to walk in on them while they're busy SCREAMING the play by play action to their "incestuous" hump-a-thon, rather than being disgusted at the sight and sounds, they'll probably just ask to join in.

Thanks, Aki-Sora. You've just cheapened the thrill of incest. And cheating.

It's like the author thought "Hmmm... how can I spice things up for Aki and Sora? I got it! Public places!" But that plan backfires when you realize it's actually MORE dangerous for them to be doing it at HOME, thus making happy time with Aki infinitely lamer. I suppose using the magic of manga they could run into someone, but the person who interrupts the meat slapping session you're having with your sister at HOME has a damn near 100% chance of knowing who you are. Isn't that the REAL thrill of incest? Besides, aren't public adventures what the ho from chapter four is for?

Case and point. Which has more shock value? The scene at the beginning of chapter three or chapter ten?

It almost feels like I'm reading a weird, disjointed visual novel since the chapters seem to have no flow or sense of continually. Sora appears to suffer from selective plot amnesia while Aki outright disappears when it's not her turn to hide the salami. This makes it seem like I'm reading two separate routes that exist in parallel universes, never to cross... like a visual novel. Well, THREE separate routes if you include the ho in chapter four.

Wanna hop on the Nami/Kana route? Skip the first chapter and read chapter two. Skip 3, 4, 5, and 6. Read 7 and 8 then skip alllll the way to 15, 16, 17, 21, and 22. Chapter 24 is the branch point where you choose between Nami, Kana, both or neither. For giggles, you can throw in chapter 12 and 18 at random points, but treat Alice and that little ass-gnome Miharu as a cross-dressing leprechaun that only appears when Sora is day-dreaming during homeroom. Seriously, it makes more sense this way.

This would be better off if the author simply skipped the incest or any build up of a plot from the get-go since clearly it never intended to have any kind of focus or deal with it in any way. Aki is merely treated like any other bimbo he sticks his grubby little cock into, living in blissful ignorance while waiting for her brothers next bucket full of lovin'. You might be able to enjoy this title for the porn, but the male lead is an annoying shota boy with no redeeming physical or social traits whatsoever. "Ah. Oh, no! Stop! Please don't! I'm gonna...!" Bitch, please. That shit loses it's believability after 30+ sexual encounters. Stop it.

Anyway, read it if you like, but don't you DARE think for a moment it has a plot or give a damn about the characters. Read it with a grain of salt. It's porn. In fact, it's an insult to porn writers. I've seen better porn scenarios that chronicle the trials of a lone pizza boy's successful infiltration into a cougar's den and his masterful delivery of "extra sausage". Way better. You'll also notice I avoided the whole "OMG DIS ISN'T HENTAI!!" debate by calling it porn. You're right, it's not "hentai". But it is porn. Disagree? GREAT! Now, go show it to your mother. She'll be thrilled.

Fact: If you read Aki-Sora as anything other than laughable porn, the Gods of whining might compel you to write a [url=]'way-to-dam n-long'[/url] rant that I can't recommend you read even if doing so would solve world hunger.

So then to answer the question I asked... what is Aki-Sora? Nothing. Trash at best. I'm not even gonna rate it because I can't give it a zero.

... Last updated on February 11th, 2016, 10:39pm
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I got up to chap. 12 or 14, I forget...   
Rating: N/A
by SensualSin
April 11th, 2011, 12:30am
But I found the story to be pretty tiresome. I like hentai and I like incest. Straight up. It's fun because I don't look for anything serious in manga. But I do like a plot as well, and if you're going to pretend to have a plot, then... have one.

This is HORRIBLY harem to the point of annoyance. I don't like the way most of the bodies are drawn, Sora, especially. He looks like a woman with wide, round hips and his passive, spineless personality was a turn off. I didn't care for the do-si-do with the "partners", the cross-dressing, and there was just something awful about that
Spoiler (highlight to view)
first orgy party where that girl lost her virginity. I guess I was looking for her to lose it with Sora, but when it just became something squick-worthy, I knew it was time to bail.
The entire scene left an icky, empty feeling behind that I didn't enjoy at all.

So, I stopped reading after that. I did see the OVA, and as usual, it was out of sequence with the manga, but accurate in the feeling it left behind...
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Just so you know, omichron   
Rating: N/A
by x0mbiec0rp
December 16th, 2010, 7:42pm
The "standard lightsaber censoring" is NOT used in hentai. It is used for smut, yaoi, and adult rated works. Hentai will have a very detailed penis, with skin and everything, and perhaps a tiny bar near the glans. It's typically almost "where's waldo?" censoring.

That's probably why it's rated as adult instead of hentai as well.
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clearly hentai   
Rating: N/A
by omichron
November 26th, 2010, 1:39am
I have actually read some hentai stories with less sex than this series. The genres by which this series is classified are highly misleading. I've read there first seven chapters, so it's not as if I haven't given it a decent shot to prove me wrong. These are not "suggestive" in the least, it's straight up porn with the standard light saber censoring still present in a lot of hentai stories.

The story its interesting but I honestly don't understand why people insist on not classifying this with there genre it clearly goes out of its way to fit.

There are vivid graphic depictions of sexual acts as well as seminal/vaginal fluids.

The plot so far is mostly moved forward by trying to figure out which other character will have sex with the protagonist and which fetish she will incorporate in her scene(s).

As plenty of reviews have stated, it's not that I have a problem with it being porn; it's that the description is misleading.

review score affected by expectations set forth in gene description.
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My reveiw   
Rating: N/A
by BirthdaySuicide
November 7th, 2010, 12:20pm
Sora was too Passive...but not that there's anything wrong with that,But when Nami raped him he should of done something.Not sit there and cry over it. But other than that this manga was pretty good.
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Just my $0.02   
Rating: 4.0 / 10.0
by mangum44
October 10th, 2010, 1:36am
This manga is hentai. What's wrong with that? And who said that hentai can't have plot, drama, or character development?
Having said that, the other genre that needs to be added to this manga is Harem. Very, very much so; so very much so. On the other hand, there seems to be little Comedy to be found here, and lots of Drama. What I'm saying is, the genres over there could use some fixin'.
As for the quality of the story... meh. Whenever it actually focuses on the main characters and their interesting relationships (Aki, Sora, Nami and even Kana), it's ok, but all too often it gets sidetracked into an orgy or a threesome or exhibitionism with random side-characters, and then it's all about the sex and nothing more. Which, again, is alright and par for the course of a hentai manga like this; and yet, it diminishes the emotional impact the "plot" part of the story could otherwise achieve.

... Last updated on October 10th, 2010, 1:40am
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