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Nana, an apathetic 24-year-old with nothing much in her life, suffers a car accident and wakes up in her 14-year-old junior high body. As she lives through each day, she starts to remember things she buried deep in her memory, and she can now not remember being involved with her older sister, whom she deeply admires, and her sister's first love, a senior at her school.


Related Series

Associated Names

Groups Scanlating

Latest Release(s)
v.1 c.5 (end) by Dragon Voice Project over 9 years ago
v.1 c.4 by Dragon Voice Project over 9 years ago
v.1 c.3 by Dragon Voice over 10 years ago
Search for all releases of this series

Status in Country of Origin
1 Volume (Complete)

Completely Scanlated?

Anime Start/End Chapter

User Reviews

1 topics, 11 posts
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User Rating
Average: 8.4 / 10.0 (457 votes)
Bayesian Average: 8.28 / 10.0
 28% (129 votes)
 22% (99 votes)
 19% (88 votes)
 20% (90 votes)
 7% (33 votes)
 2% (10 votes)
 1% (5 votes)
 0% (1 votes)
 0% (1 votes)
 0% (1 votes)

Last Updated
July 30th 2016, 12:34am PST



Category Recommendations





Original Publisher

Serialized In (magazine)
Chorus (Shueisha)

Licensed (in English)

English Publisher

Activity Stats (vs. other series)
Weekly Pos #658 increased(+31)
Monthly Pos #1361 increased(+144)
3 Month Pos #2206 increased(+138)
6 Month Pos #2385 increased(+341)
Year Pos #2877 decreased(-202)

List Stats
On 178 reading lists
On 458 wish lists
On 1197 completed lists
On 18 unfinished lists
On 279 custom lists

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Forum Posts
HElp don't understand (spoiler) over 7 years ago

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User Comments [ Order by time added ]

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excellent manga   
Rating: N/A
by deathgod
March 25th, 2008, 11:27pm
very attractive story and appealing love this manga

i just hope they will continue scanlate this smile
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Rating: 9.2 / 10.0
by Oriolidae
February 12th, 2011, 10:30am
This manga is very beautiful. I just started reading it from my "jumble manga folder" on a whim, and boy was I surprised? This is some deep poo, man!

What would you do if you could relive certain parts of your childhood, would you act differently or just enjoy reminiscing? This manga depicts how easily children can be destroyed for life, just because of bullying, and how their personality will change drastically accordingly. But the manga goes much deeper than that, when it takes up topics about death (and the feelings of the ones left behind) and siblings relationships from a child's and a grown-up's point of view at the same time.

I enjoyed it very much, and now I actually also want to travel back to when I was a kid, to change how I reacted to so many things. Aw... Damn, WHY CAN'T I?


Egoamote, I think the reason why they didn't choose the ending you depict is because that would reduce the audience. It is just my perception that quite some people may drop reading mangas if they are somewhat tragic.

... Last updated on February 12th, 2011, 10:42am
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Very Very Good.   
Rating: 9.0 / 10.0
by wintermelon
June 5th, 2009, 7:38am
This word doesn't give the manga enough credit.
I adore the art: very realistic, detailed and simply beautiful!
The plot is exciting, sweet, something we can all relate to (to a certain extent).
The storytelling and the art style matches well.

The main character isn't as weak as i thought she was, its very very good how she develops (yes, develop within 5 chapters biggrin biggrin biggrin )

The repeated phrase --
"Dont think that the crying one is always right!"
Won't you agree that it is very true? smile is really cool how there are so much that I can relate to.
There is a lot of symbolism as well, so other than the drama filled moments - it is also a thoughful manga...

Ha! xD
Definitely one of my favourites in this genre.
How rare can a manga be so good? The art and the plot and the style; it all works!
Though the only mark off is due to the ending - it does not give me a feeling of accomplishment and finishing....but ah well bigrazz

... Last updated on June 5th, 2009, 8:13am
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It was a good manga.   
Rating: N/A
by flowerzan
December 14th, 2008, 7:48pm
I love this manga. Although it is not fully scanlated, from what I already read, the story was deep, meaningful, and quite interesting. I love how the story shows the evolution of the protagonist. The story tells you how the main character became the way she is and it also shows the process the character undergoes in order to understand herself.

If you like this manga, you might also like Seigi no Mikata by the same mangaka.
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Great Short Manga   
Rating: 10.0 / 10.0
by peanutss777
October 29th, 2007, 8:10pm
Remember that old show they had awhile back about a guy who was able to go back in time and have a redo on everything starting from high school that got cancelled in like, 5 episodes? Heptagon is like that - except this doesn't suck. If you like Josei stories, do yourself a favor and read this.
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Love it   
Rating: 10.0 / 10.0
by Bisis
April 26th, 2009, 1:04pm
I've read it about five times.
It'd be cool if you were able to travel to the past, to your old self. But we can't and this story make you wonder how much you can change in your present. And to rethink about yourself and who did you use to be.
Love the last scene: in the elevator. I didn't get it the first time. Even if there is a love story, there is more about the identity
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Everything fits perfectly   
Rating: N/A
by djbreezy
April 15th, 2009, 11:45pm
There's good foreshadowing and character development within this manga. I also enjoyed how everything fits perfectly and has a nice symbolism regarding the heptagon and the number 7. If you speed read it will be confusing, but if you take your time you will understand it. It isn't long, but has enough to give you a nice and sweet story. Recommended
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reread worthy   
Rating: 10.0 / 10.0
by egoamote
February 2nd, 2010, 4:00am
This is the kind of manga that gets better, the more you reread it. Like wintermelon mentioned, I think the quote, "Don't think that the crying one is always right!" holds true really well and I keep rereading this manga because I'm occasionally reminded this quote whenever I read other manga with the similar situation.

Spoiler (highlight to view)
Not sure if this even is a spoiler, but just in case.
At my first read, the whole time travel dynamic executed in this manga bothered me. Most stories I've read thus far that dealt with time travel and changing the past, the conclusion tends to be that nothing gets changed or that something goes horribly wrong and then undo everything that was changed and the protagonist learns that it's best to not change the past and face their present and look to the future. However this story does change the past and for the better rather than for the worst. Nana manages to regain her old self and she prevents Hiraoka from being killed.

I was hoping that Nana going back to the past was more of a flashback instead of something supernatural like time travel and that her situation didn't change after waking up from the past (i.e. Hiraoka remained dead) because the fact that the miracle did happen undermines her own personal growth as she regains her true self. The situation would still be the same in the end because Nana herself thought it was just a dream, but she wouldn' t meet Hiraoka in the end because he did die and he can't come back to life. I just think that it's more natural that way and more realistic.

Well I'm just asking for too much and I like Nana and Hiraoka, so I'm glad she saved him and they meet again.

With that being said, this story is more about the journey rather than the ending.
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Rating: 10.0 / 10.0
by liquidsin
February 10th, 2011, 7:16pm
Heptagon is a great story that immediately grabs the reader's attention. The quick pace and short length combine to make it flow seamlessly while also trimming off the excess fat (no repetition, silly gimmicks, etc.). It is also very easy to relate to because it deals with family matters, relationships, and the past regrets that one wishes to change. I highly recommend Heptagon to anyone looking for a good read.
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Very Well Done.   
Rating: N/A
by Zhenis
January 12th, 2012, 4:11am
I was very mesmerized by this manga, I recommend it.
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