Gyakusatsu Happy End
Massacre Happy End

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Story: 8

Very entertaining and engaging. The manga manages to give a twist to the concept of time loops, and keeps you abreast of the decisions that the protagonist will make taking into account his goal and curse.

Art: 7

Regarding art, it adapts very well to different situations, emphasizing the macabre of some scenes, not recommended for those with a sensitive stomach.

Characters: 7

As for its characters, they all fulfill their role quite well. Something that I really liked was that unlike other works of this style, the protagonist is not so much a genius or a defenseless child, but someone who makes decisions ... that are quite realistic or with which you can at least empathize.

Enjoyment: 9

To finish, highlight what I said at the beginning, I wouldn't say you'll find a masterpiece here, but it is a remarkable work, which knows how to make good use of its resources and ends up being pretty interesting.

Shout out to stories about “People put into the absolute worst situation possible”. Gotta be one of my favorite genders.

This is a story engineered to question your morality as a human being. Right from the setup, how the hell are you supposed to react when put in a time loop where killing is the only way to tomorrow? Maybe you can react to it properly, formulate a reason, a way, but oh no, of course we can't give the protagonist, Kusakabe, a nice day. Put his sister on a timer, and watch the whole world burn. No time to think, no time to give ... one-self a chance, you gotta kill, and you gotta do it fast. Would you? Would I?

It's such an entertaining, brutal story. I love when an author creates an outlandish set-up, and simply writes how people would react to such a thing. I wish there was an adaptation, or some way to enjoy it visually. Such a potential for a hit, even if the rating will tell you otherwise. However, I know the faults lying beneath the tale. I'd say, convenience is what will pull people away by a mile, even me. Moments where somebody is being mutilated, but they don't react as much as they should. No thrashing around, no screaming of pain. Other times, coincidences do lead to the story continuing because it had to. Still, for the whole complete journey, it was fascinating to see the meaning in the meaningless. This is a story of a desperate person, doing the most desperate things to keep going, to keep fighting. Who will you cheer? People will murder for the wrong cause, as long as they believe it's the right thing.

Every character is given enough depth to justify the actions, save one or two, who really don't get enough screen time to garner the events of the final arc. Still, they work, they serve a good purpose, and you do start caring about them. One of the initially funny characters became my favorite of them all. I was never turned off by a chapter, or wished to have somebody else on screen. Small cast, focused, believable, entertaining, with enough differences between all of them. Great little cast.

Now, holy, mother of god. The art on this manga is INSANELY GOOD. The expressions of every character, body language, fear, happiness, sadness. Sure, it sometimes exaggerates the dialogue, but I can closely believe the things they feel because of the visuals. The moments of tension are palpable, the voices I can imagine feel so lively on everybody, and the gore. My friends, let me tell you how good the art on the gore is. No, this isn't one of those that draw intestines like a bright-colored piece of meat that has no blood on it. I like that in certain series, but here, if somebody smashes a head with a hammer, the eyes will slightly pop out. A cut, done by somebody with experience, can lead to decapitation with enough precision. The expression of death is horrifying every time it happens. I respect the author so much for showing the brutality of death as it is. Gross, bloody, filled with dread, faces that shouldn't be done by a human being, and eyes that have no life on them.

One of the most entertaining stories I've seen in recent manga. Characters that serve the purpose well enough, and perfect art to sell everything. The only problems with it being suspension of disbelief, and constant coincidences that protect the protagonist at times. This is a case where I don't care that much. I love this manga, and everything to do with it, but I can admit, it ain't perfect. Dialogue can be very in your face, stating the obvious lessons and themes, but it works well enough.

9.1/10. No spoilers, but, f*ck that ending. Not because it's bad, but let me put it this way. If you break somebodies leg, they're sure to remember you. That's how it made me feel.

I'm the type that reads most random manga that's out there, as long as the premise is interesting. Gyakusatsu Happy End has an incredible start that starts nose-diving into one of the worst writing imaginable.


Story: 1.5/10
The only thing the story does well is not to let either side hold absolute power and control. It does well on the similarities of Death Note, a cat-and-mouse chase. It has the tension at the start, albeit goofy with the characters that I'll explain later below.

Let's start with the biggest issues thus far - how convenient everything falls into place. The story becomes incredibly dumbed down, not the premise ... that's actually interesting, but how everything falls into place. Not by you as a reader, but by the story not just giving it all to our characters. A similar, big problem is how they would explain that something "might" exist or some theory, despite there are plenty of reasons why it both sounds stupid and how flawed it'd be, it wouldn't matter, since it'd be exactly what they were looking for.

Something else is the story annoyingly adding new characters to an already established plot. While some characters somewhat fit into it, there are definitely others that just appear out of existence to serve the story. The only good thing is that they at least somewhat affect the story, despite them being so plain and obvious that they were inserted haphazardly.
There are many plot devices that are just convenient, and you're expected to believe that they just find the answer, or believe an amazing plan because of a crazy idea, but in actuality has so many flaws. The locations are horribly presented since they're added just like the characters. You just don't believe they were planned into the story, but something the author just added.
Despite having many large flaws in the characters' plans and the story itself, it does not matter nor cares, because the author doesn't care, or just didn't think through/plan the story enough.

What I'm glad over is when the story focuses on our protagonist, because that's when it actually is interesting and coherent.

Characters: 3/10
Everyone is crazy in some way. The detective plays the obvious, typical "oh I'm quirky and don't actually follow the law.", the side-kick to the detective that leans more into justice, the yandere that goes crazy and goes for the love interest. Our protagonist is basically Kira and the detective is L. These are the main focus of the story from start to end.

Let's start with the positives. The protagonist I liked for his descension into madness from his own issues, it's written entertainingly and doesn't feel too out of place, albeit incredibly edgy. He does somewhat play the smart character well, but the story's focus slowly shifts away from him, and onto the police officers' "investigations". The love interest is similar to that mixed with our protagonist pretty well, a person that wants to protect their loved ones, willing to risk their innocence for it, for what they feel is the right thing. Our protagonist, again, is similar in that vein, but loses himself much more. He sets the theme of a psychological thriller very well and is probably the biggest hook and reason for the manga being decent.

Now, to the worst character. One of the antagonists to our protagonist; the "detective", has to be the dumbest character ever written. It was like he's written by an A.I.
First off, for a police officer, most things he does, he gets away scot-free, but somehow it's to establish how quirky and potentially insane he is. The problem is how literally nobody else in the police department is capable, and the ones that are capable of solving multiple murders are teenagers and him. Worldbuilding suffers from this since everyone's incapable of doing the right thing.

The problem as well is the leaps of logic he does as a detective, he doesn't deduce our protagonist. Of course, he has the God damn, typical "oh, I just have a feeling", and drives that to our skull, making the craziest plans that could've actually been solved a long time ago, or without doing the edgiest, crazy crap. I want to give a quick example, slightly spoiler-ish.
The detective almost kills two teenagers to prove a point, and one of them is entirely innocent. He doesn't do it well, mind you. Of course, the plot favors bullshit, and despite doing something insane and "intricate" enough, he just walks away thinking everything would be fine. And of course, most things he gets away with because the police are dumb enough to just let him go, despite in the other police officer's eyes; he is intentionally trying to kill teenagers, make false accusations, waste time to find the actual killer, and more. The fact that he's not fired or actually in jail far earlier in the story is maddening.
The detective is a cartoon villain with how who plans dumb ideas and fails, but we're supposed to believe he's quirky and crazy because he has amazing intuition and smarts.

The second large problem is how most characters make the dumbest, asinine decisions - and the plot favors it. This I can't go too much into since it'd be too many spoilers, but just think the dumbest decisions you can pick, and it works out because the author didn't have a second thought. The biggest similarity I can come up with; think of Death Note, but written by an Isekai author.


Art: 6.5
The art is nice, the focus is on the characters; like facial expressions, body language, and such. Although it makes the background so incredibly plain, just there to serve where they are at most of the time. This is the only reason why the manga does so well.


Overall: 3
If you can really, truly turn off your brain, you 'might' enjoy the plot. At the very best, it might be a guilty pleasure, like why I even finished reading it. At worst, it's another interesting, edgy manga ruined by the horrid writing and characters that'll make you physically cringe. If you just read a light novel of it or just the script of the manga, you'd believe this was written by a 13-year-old, thinking they just wrote Death Note 2.

I've been following this manga for several months and I guess only 20 chapters have been translated into English (although all 55 are translated into Russian) so far. I'm basing my review on those first few chapters.

I am someone who likes edgy manga. When I say "edgy", I mean a manga that unites two things: originality and transgression. A manga that merely violates taboos is not "edgy", it's just offensive. In this sense, my application of the word "edgy" to a manga is a compliment of the highest order.

Gyakusatsu happiendo is a very, very edgy manga. It's plot is a combination of two very popular ... devices - death games and time loops - that I don't think I've ever seen before. The main character is not a moralizer and is not afraid to kill to get what he wants. In fact, none of the characters are really "good" people, something my cynical, misanthropic self is very satisfied with.

I would absolutely recommend this manga to anybody who likes gritty shonen thrillers like Ajin, Bokutachi ga Yarimashita, Fire Punch, Mahou Shoujo Site, etc.

What if tomorrow never comes, unless you kill someone?

Are you fans of Death Note? or are you familiar with the survival manga Signal 100? And Gyakusatsu Happy End is strongly recommended for you! Bring you the writer of unpopular survival manga Signal 100, Gyakusatsu Happy End has a lot of bloody stuff, different from the Signal 100, this series contained more logically killin stuff rather than a graphic gore stuff.

Story 7/10
Kusakabe Makoto, a highschooler with his poor life (abandoned mother and living with his not-caring father), only has his little sister lying down in critical condition in hospital. But somehow hope is coming to him, his sister could ... be cured by an operation in weeks. After that miracle happens, Makoto being cursed with his tomorrow never comes, the day will repeat itself unless he kills someone each day. To outcome tomorrow, for reaching his happiness with the cured sister, he try to managed himself by commiting murder day by day. Makoto's plan is also being noticed by police, making it never gonna be easy for him to face tomorrow day. 

The plots are easy to follow for people that enjoy criminal themes or even casual readers. These simple plot made a lot of good things happen, example with how MC trying to deceiving the police with his murder. It would be a solid 8 if the author doesn't make it so rushed with the ending.

Characters 7/10
The first half of the series, we dealt with 3-4 main characters involved. With these certain characters, the writer makes a solid development example with how the MC dealt with his curse turning from 'average highschooler' into a serial killer. Then a supporting, generic childhood neighborhood friend of MC with a potential love interest that notices something happening with the MC and tries to adapt with the situation. Also the police role that represent a smart detective who noticing a unusual mass murder happen in the street and figuring something illogically are behind this case. 

At the start, I think the writer made a good development with these small bunch of characters. But later on the series, they added 3-4 more characters involved with the story that made me somehow feel the author could even potentially maximize the current character rather than adding some. Those additional ones made the plot of the story more generic for me, I felt those additions were being made to fill some hole from the story or just the author avoiding to do more experimental plot. 

Art 8/10
The art is good stuff! The author draws the characters with a certain characteristic for each character so the readers manage to recall the characters to each other. The author also got an eye in detail for drawing the expressions and body language in the panel. What I like with the author's drawing style is when they adapt the drawing style with the situation. The author also good dealing with bloody stuffs, the scene of murdering person are drawed so well, not just graphic violent itself. The author managed to make certain scenes so breathtaking even with just the expressions from the character, even better when the author manages to maximize the background, the panel and the character's drawing. But unfortunately, the author doesn't make these breathtaking panels regularly, I think it would make the series more intensing.

Enjoyment 7/10
As a reader who enjoys thriller genre also intensing/breathing art, I am enjoying myself while reading the series. It's easy for me to follow the plot, and also to amaze with this kind of good art from every chapter. Even though it felt rushed at the later stages of the series, I still think this series is good for you to enjoy manga like "death note" or similar twisted criminal themes. Also this series is not too long to be read on the weekend. 

It must be one of the mangas with more conveniences that have ever crossed my face. However, ironically, for the protagonist there are rather few; the rival detective is the one who gets almost all of them this time. Very cool also the conveniences of characters that, coincidentally, with how big Japan is, are always there to be found when the plot requires them to do so. There are tons of plot holes, and the author simply overlooks too many details that are essential for a psychological thriller like this work.

On the other hand, the atmosphere in general is very well done: it transmits an ... appalling despair, sadness and tension, as well as it makes you empathize with the protagonist despite the atrocities he commits, although the quality of the writing is not up to par with the rest. It is simply a work with which you suffer more than enjoy, something that is evident with the evolution of a certain character that I will not mention for spoilers reasons; in that aspect, congratulations. The premise and the use that is given to time loops are interesting; however, this further accentuates the mangaka's shortcomings as a writer, as he leaves behind a fair share of plot holes.

In the end of the day, the concept, the atmosphere and the hook are all great. A pity that the mangaka fell short in the planning of events.

It was a thrill ride, I won't drag on this preface too much and just get to the nitty gritty of the review for those interested in this banger manga.

Story: 10

The time travel trope tends to either be done poorly, or be done well, there's usually never any in-between. It was done in an interesting way in this, and definitely done well. It's equatable to how Steins;Gate did it, granted they're two different styles, it was handeled in a way that they're close enough to compare (the way time traveling is handled, not the genres). I can't say it's the most unique, but it's a ... type of time travel that's not too common, especially with how the MC triggers it (or rather, how he doesn't) All in all, well written story that'll keep the reader wanting to continue till the Happy End.


Art: 10

I'm a sucker for this style of art, so this is a bit biased, and there's not much to be said, but this type of art where it has a sense of almost realistic mixed with the anime style, while also having a well shaded "dark" aesthetic, it's great. The character designs were all recognizable, simple, but well done.


Overall: 10

Has a great psychological horror feeling, the mystery is very captivating, the brutality is there, but not unrealistic (despite being a very unrealistic situation). Give the manga a shot, if you like bloody time travel stories, you've found a great one. If you're a fan, pray for an anime adaption, because this would be an amazing one.

Suspension of Disbelief to the max level

Quick emotional thoughts: I feel like people are giving this manga too much credit. The premise is really interesting and it's what got me hooked onto it, but about halfway it just got way too silly. Things started to just happen for no reason with no explanation, and I wish I could give examples on here but it would be spoilers for those that want to read it. It's a real shame too, since last night I went to bed excited to read more, only for this time I'm going to bed annoyed at how it became.

Now with ... this out of the way, lets go into a bit more detail overall:

Story: 4/10 As stated in the opener, the premise of this story is really interesting, and to it's credit they did do the time-loop scenario very well here. That's about where the good I can think of ends when it comes to the overall story. For the bad, way too many things fall into place for convenience sake just to keep the plot going. Characters are introduced last minute for this, the MC is suddenly a magician for this and knows exactly how things will play out without the time loop, and the timeline in quite a few scenarios stop making sense just to speed things up for tension and the plot. One character even comes back later on just for the sake of the plot, which actually makes the entire past however many chapters moot if you put any thought into it.

Characters: 4.5/10 Sheesh. Everyone is crazy for crazy's sake. In the beginning for the first few characters it made sense why they would be so quick to go insane, but later on it becomes ridiculous. For instance, for the MC and the first "love" interest it makes sense why they would be quick on becoming, well, psychopaths, considering their backgrounds and what they've already had to go through. It was really well done. For the rest though, especially the detective and the second love interest, they descended way too quickly. I can understand the detective to an extent, the whole "crazy detective that will do anything to solve the case" trope, but he's still a detective. Regardless of his own personal vendetta, getting to that role isn't an easy feat, and his tendencies probably would've gotten him psych eval'd before he ever made it to becoming a detective. Really the only redeemable character was the detective assistant.

Oh, and fairly quickly the MC gets a massive strength buff for no real reason. Suddenly he's able to take on the police and a Kendo practitioner with no issue, as well as overpowering basically anyone and everyone aside from one instance when the plot needed him to be weak.

Actually, let me speak real quick about the background characters, especially in regards to the police. They're all terrible...that's all. Just terrible. Stupid, moronic, idiotic, weak, fill in whatever negative adjective you want and it would probably fit well here.

Setting: 6.342/10 Japan. That's basically all I can say, just Japan. One day they're in Tokyo, next day they're out in the sticks. Just wherever the plot needs them to go.

Art: 9/10 Honestly the art is pretty great in this manga. I have no real complaints with it.

I guess that's about it. If you want to kill time and you're in an edgy mood, go for it. If you want a good, thought-provoking story that will stick with you, this ain't it. Overall, 6/10. Not a complete waste of time, but I wouldn't put it in my top 100.

High school student Kusakabe Makoto has to work all day to raise money for the treatment of his younger sister, who suffers from a serious illness. The father is unemployed, the mother ran away, leaving the children, bullying at work ... Despite all this, he does not lose hope and continues to live for her sister. But having learned that she did not have long, Makoto falls into despair. Fear of the unknown causes him to take a different look at the value of human life.

Story: A simple story (what to expect from a gore manga). Of course, this one follows the same pattern as ... all manga in this genre, a good protagonist who has something bad happen to him that makes him go crazy and have the police behind him, only that this work has a very interesting resource: time travel. Thanks to these, our protagonist can kill without anyone discovering him, except for the mad detective who is even crazier than the protagonist. He has a good pace, I have to say, but the conclusion is very bad. The reason why he gets his time-traveling powers are absurd, and the end of the main character gave me even satisfaction to see how it ended. 06/10, and that score is for innovating in something

Characters: The protagonist, Makoto, goes from one day to the next from being a little angel to becoming a potential psychopath, with hardly any development, his sister for whom he does all this I am not going to talk about her since she has more appearances in the mind of the protagonist than in the world of this story, appearing very little. The daughter of the prostitute she "saves" is also another little prostitute who is very heavy, has 0 intelligence and is only there to touch the balls, her reappearance after Makoto abandoned her is saving, she is jealous of the protagonist's sister and she reappears as Oolong from Dragon Ball (if you read this manga, you'll see what I mean). Then there's the crazy detective who goes after Naoto, who I found interesting at first but ended up liking him badly, nothing to say about him. The only two characters that for me are saved are the detective's assistant who looks like a cat and gives us fanservice and Makoto's second sister, one of the few well-written. And yet you know what I'm telling you? which are not even so bad. Despite having criticized some of them very harshly, I don't dislike them at all, except for the miniprosti that is insufferable. For me, the characters section is a 07/10

Design/drawing: very graphic, something I like about gore mangas because when you go to read a style manga you look for blood and strong panels. The design of the characters seems very good to me, even the Oolong is very well drawn, the landscapes and backgrounds are also very good and detailed, for me it is a 07/10

Entertainment: I'm hooked, so why am I going to refuse. Although I repeat, I did not like the ending, that revelation of where the powers of time travel come from, more than half of the manga I read in a single day, and there are 55 chapters that are said soon but take time to read having other things to do. In this section another 07/10 will also be taken that could even go up to 08/10

Conclusion: another gore, simple, but with a very distinctive resource that takes advantage of it very well, although adding all these previous notes we get a 6.75 almost 7, I'm going to keep it at 6 because it's simply good, with nothing to highlight