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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.


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Latest Release(s)
v.1 c.5 (end) by Dragon Voice Project over 12 years ago
v.1 c.4 by Dragon Voice Project over 13 years ago
v.1 c.3 by Dragon Voice over 14 years ago
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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: 8.3 / 10.0 (476 votes)
Bayesian Average: 8.19 / 10.0

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 #624 increased(+134)
Monthly Pos #1286 increased(+330)
3 Month Pos #2367 increased(+635)
6 Month Pos #2950 increased(+1262)
Year Pos #5378 increased(+175)

List Stats
On 183 reading lists
On 476 wish lists
On 1237 completed lists
On 18 unfinished lists
On 302 custom lists

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User Comments  [ Order by usefulness ]
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Tried to do a little too much  
by Shellshock
October 9th, 2020, 7:55am
Rating: 5.0 / 10.0
The series Heptagon is about a girl who thinks to highly of her elder sister and somewhat deviod of emotion. She gets into a car accident, goes back in time and gets a 2nd chance at life in middle school.

The idea is good but the series just tries to do too much in too little. First its a 2nd chance story, then its a beating your sister story, than its a romance story, then its a better yourself story. It tries to do too much in 1 volume and it doesn't really work but the thing is it didn't really put down the series either. It didn't stick but it didn't mess up either. So the author was able to scrape away with the problem. Really another issue is that the series is called Heptagon because 7 people made a time capsule during the middle school. But like that entire subplot is pointless. These small issues aside the series though may not have a solid grasp on what it should be and i think it does the romance pretty well. I do think the ending could've been better. How the issues were resolved could've been better but overall i think the author did a decent job.

5/10 Its fine. Decent time killer.
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Eh. It tried  
by moonmystery
December 23rd, 2017, 10:27pm
Rating: 6.0 / 10.0
Heptagon had an interesting concept and brought up some mature themes such as regret, depression, adulthood, etc. but failed to execute anything well. Even the art style dramatically differed from scene to scene.

However, this is a manga with heart behind it. The author clearly was passionate about the subject matter, and it shows. Despite the disjointed and not-thought-out plot, I enjoyed the ideas behind everything. It's only five chapters, so you might as well give it a try.
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by Ah_Cat
June 12th, 2017, 2:17pm
Rating: N/A
My, my, I don't remember reading anything similar. It was really "josei", without screeming heroine and crazy actions... Apart from the craziness in the time warp.
It made me cry, a lot. The impact of the story was really heavy, I'm happy with the ending, althought I would like to see more of them. Great charaters don't show so often.
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Very Good  
by svines85
November 30th, 2016, 11:39am
Rating: 9.0 / 10.0
What a great little story, a straightforward plot that's established early, with mostly likable (and supportable) characters throughout, and (though it's fairly short, it's still not a given) it's told consistently to the end.

Yup, very good, a winner I picked up from haunting the "I'm Looking For..." forums and making sure I at least give a look to any/every thing that's recommended there biggrin
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by maidenrose
January 16th, 2016, 4:41pm
Rating: 5.0 / 10.0
Seemed interesting at first because the protagonist was
Spoiler (mouse over to view)
so unusual for a main character, pitiful and void of any real identity of her own. She was portrayed a someone who idolized her sister so much that she imitated her and sought her approval constantly. She was the prototypical throwaway side-character, who is nothing without their relationship to someone greater than they.
The end was rather disappointing. It didn't seem like the character had undergonme much personal growth imho. Reminded me of why I don't read shoujo anymore.
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I want moreeeeeeeeee  
by hangluu
August 24th, 2015, 1:15am
Rating: N/A
This is sooo amazing. And i want more. It makes you think about how your decisions affect other people and how others' affect you. And you should find yourself instead of being an android that follow orders from a person. The sister is a bitch.. a huge bitch.
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It's alright, nice and short  
by flowinmyboat
November 2nd, 2014, 8:27pm
Rating: 7.0 / 10.0
I had put this series off for a while because the first chapter bored me my first read through. Decided to finally finish it and thought it was pretty good. It definitely could have been a little longer and fleshed out since you are thrown into some situations and it's a bit hard to follow in some places. Maybe less hard to follow and more, "Did she change something? Did this happened already?" I think another reviewer mentioned something similar to this and I guess it wasn't too bad since they were minor details at best. But, considering that this is a dream-like story, I would have personally preferred some exposition just to keep things clear.

The ending felt like it was a page or two short. It was somewhat abupt and confusing
Spoiler (mouse over to view)
(did Hiraoka recognize her as the person who helped him? Was he not suspicious she didn't age? Or, alternately if the 14yr old Nana helped him, did they not keep in contact those ten years?)
but not disappointing. But the story was really interesting and there were a few parts that actually elicted an emotion from me as a reader. Overall, good read.

... Last updated on November 2nd, 2014, 8:34pm
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Really good  
by mistress_tanpopo
June 29th, 2014, 12:45am
Rating: N/A
If you could go back and fix things that you regret would be so awesome. This story gives you a glimpse of what it could be like. I really wish it was longer but it was a very great read.
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by coco77
June 28th, 2013, 10:46pm
Rating: 9.5 / 10.0
Yup, breathtaking. I really had no problem with the disjointed narration like some mentioned; I think it portrayed beautifully the fragmented nature of her lost memories and lost personality. The character grew incredibly in only short five chapters, and though quite abrupt, that growth felt really natural and inspiring. The romance, though not the focus of the story, managed to touch my heart in such a special way. So in short, I loved it. Please don't hesitate, go ahead and read it.

... Last updated on June 28th, 2013, 10:50pm
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I'll be the asshole  
by Fundefined
December 26th, 2012, 10:27pm
Rating: 5.0 / 10.0
Heptagon is nothing special. It has awful artwork and panel layout. The narration is disjointed and you can't tell when time lapses have occurred. The author clearly put some thought into the plot but she does a mediocre job explaining character motivations and tends to repeat herself a lot. Sorry to put a damper on 3 pages of endless praise but this manga is just average.

... Last updated on December 26th, 2012, 10:29pm
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