Kaiju No. 8 is one of those titles that really took the world by storm. It was a manga that promised to bring in a whole lot of action and Kaiju throughout. Well, I can definitely say that the title delivers on that with nonstop action throughout the series. At the same time, I can understand why some fans were a bit disappointed. If you really enjoyed the opening chapters about Kafka being a part of the cleanup crew and learning how to master his powers, then that was a different series. Me personally? I prefer having high octane action shows so this was more up my alley.

The series begins by introducing us to Kafka who has always wanted to join the defense force. He has the drive for it but unfortunately lacks the skill or the energy for it. Kafka flunks out every year and is forced to stick around as one of the monster cleaners. He comes in after the heroes have beaten the Kaiju and just does his best to get the remains off the street. Well, one day a mini Kaiju goes inside of him and Kafka becomes Kaiju No. 8. Kafka passes the exam this time and can finally fight alongside his childhood friend. Can he keep his new status as a Kaiju secret from the rest of the team or is he absolutely doomed?

The idea of an older main character certainly appealed to folks because it does feel like most of the big action series are about kids or teens. Well, it doesn’t really end up being a big factor here since Kafka acts like a teenager anyway. He certainly has a fun time goofing off but when the villains show up, Kafka is able to lock in. I would say that he’s a good main character even if he may not stand out a whole lot. Essentially he is the kind of character who will make the right decisions and get out there for the fights. He wants to protect his friends and will defy orders in order to accomplish that objective.

In a way his not standing out matches the series a bit where some would say that this one is just a generic battle Shonen by the end. I would say to a large degree that’s true but the execution is really good so that makes up for it. There’s nothing wrong with being generic as long as you’re fun and that’s the approach that Kaiju No. 8 is going for. The art is also really good for this series and that makes a difference. You can feel each hit and there are a ton of memorable shots here. The series is absolutely at its best during the action scenes but the artwork stays consistently good throughout.

Partially because of all the nonstop fighting, the character cast is rather small for a 16 volume series. There are a bunch of side characters running around as part of the Kaiju company of course but in terms of characters who get a real role, well that never expands too much. Perhaps it’s a good thing, this gave us more time for battles after all. Additionally, there are only so many times you can give someone a new Kaiju weapon without it feeling excessive. Anyone without a Kaiju ability was rendered powerless by the end so they would have gotten power creeped out of there anyway.

Reno is a prodigy for example but the limits of the human body are far too low to really give a Kaiju a tough fight. I should differentiate between numbered Kaiju and standard ones though. Standard monsters can absolutely be defeated as they usually are by the company. It just so happens as this series starts that a big villain known as Kaiju No. 9 has been amping them all up to new heights. If not for that then things would be different. We went from having one super Kaiju in 10 years to suddenly having over 7 in one shot.

So Reno is one of the fighters who ends up having to use an experimental Kaiju weapon. While it is not as impressive as Hoshina’s, I would say that it’s pretty good. Reno’s is ice based so he is able to freeze his opponents and keep on fighting. He never quite caught up to Kafka but at least this way he isn’t a liability on the battlefield or anything like that. Reno is able to hold his own and he’s a nice guy in general. His character archetype in these titles doesn’t always get to contribute a lot so this was nice to see.

Kikoru is the main heroine here. Some would argue that Mina takes the role but Kikoru absolutely gets more screentime. At first she has fun mocking Kafka and his efforts but gradually begins to respect him as a father figure. She is the greatest rookie to ever join the defense force and we find out that her parents were both influential figures. In a way she was born for this role and certainly has no problems living up to the hype. Even before she gets a super weapon, Kikoru was dominating fighters left and right. By the time she does get a power up, Kikoru is easily one of the strongest fighters in the series.

She ends up fighting one of the best villains as well so that worked out. In general she has a fun personality. I always like the fiery characters who can banter with the villains. She’s not here to make friends or negotiate with the villains. Kikoru definitely did her mother proud. Her mom only appears in flashbacks but we see how she was also a living legend in her days. With virtually no backup she was able to deal quite a blow to the opposing Kaijus.

Kikoru’s father Isao also gets a decent role although it was a bit smaller than I would have expected. He is a really gruff guy and believes that justice has to be tough sometimes. He pushes this to such an extent that I considered him to be more of a villain throughout the series. Easily the lesser of two evils compared to the Kaiju but anyone who would so quickly sentence his allies to death is definitely not a hero. He has the power to back up his sharp rules though and could have taken out nearly anyone in the series. It’s really impressive how well he did against No. 9 even while he was so much older. If Isao had been in his prime, then he probably would have won.

Gen is yet another prodigy on the hero side. You already see how many prodigies we have right? This is why you couldn’t expand the cast too much farther because the word would probably lose its meaning after a while. Well, Gen can use his eyes to read opponent weak spots as well as almost predict what their next action will be. He has a lazy persona which is the only thing that keeps him from rising up the government ranks. It’s not really something that Gen is interested in anyway though. He just wants to destroy Kaiju and being a platoon leader allows him to really do that without having to hold anything back.

This guy ended up being one of my favorite characters in the series. It may seem at odds with how I typically enjoy characters who are super gung-ho and ready to fight but I do enjoy the lazy ones as well when they are justified with it. If Gen was weak then he would likely end up being a bad character. So he is walking a fine line but that’s just something that will always come with the territory of being this kind of character.

He is rivals with Hoshina who is….another prodigy! Usually it is unheard of to try and fight a Kaiju without a gun but that is exactly what Hoshina does. He relies on his short blades and just tears into them. This requires him to have a great amount of speed and piercing power. A few good hits could take him out of commission permanently. It’s a high stress kind of fighting style and there are probably very few fighters who would have the sheer talent needed to support this kind of style. He does his best to train Kafka and is a good right hand man to Mina.

Hoshina tends to be very serious so the series did a good thing by pairing him up with a very talkative Kaiju. This leads to a whole lot of banter from both sides and it ends up being a fun dynamic. It’s not a dynamic that we get to have around for very long since the series is already starting to wrap up by then but it was still nice to see. Hoshina was one of the first big fighters to appear in the series and he actually remains relevant throughout the whole run.

His boss is Mina who also serves as the goal post for Kafka. She fights using a powerful sniper rifle. Her sheer amount of power means that she can effectively take out a Kaiju from any distance. It does feel like this limits her a bit in battle though because there are only so many ways you can draw her shooting at an opponent. It isn’t like a handgun where she can fire on the go. This one has her stay in one place to ready the giant gun and fire it. For this reason the final arc lets her fight without the gun briefly to remind us that she is a well rounded fighter too. Until that point though, she ends up feeling a bit one note.

While we are told continuously that she is stronger than Hoshina and most of the other characters, you just have a hard time buying into that because of how she doesn’t get to show off her physical abilities more. Either way she is a good character. She makes sure to give Kafka a hard time so that he continues to improve more and more while also always being ready to fight. She will surpass her limits in order to suppress casualties so it’s clear why she is a platoon captain.

There are some other fighters on the hero side but they don’t have fancy Kaiju weapons so they get left in the dust. For example we have Iharu who thinks of himself as Reno’s rival. It’s a nice thought but at the same time the gap between them is simply too vast. He would lose in an instant against Reno because he doesn’t have the speed to compete or even the firepower to put him down. This quickly becomes the case for all of the non Kaiju enhanced fighters. There really needed to be some way to have reduced the gap here.

On the villains side, Kaiju No. 9 may have set the bar too high. He shows up early on and remains as a big villain throughout the series. His whole existence implied a higher form of Kaiju would always be able to talk and strategize. Unfortunately that is dropped after the first 2-3 and then most of them end up being completely mindless. Yes, they have pretty cool designs and awesome powers but they aren’t actually talking. It was too bad because there was a lot of potential there. This also feels like something that the author walked back on because initially it definitely seemed to have been part of the plan. This is a series that needed to keep going to 20+ volumes.

No. 9 is cool but the kind of villain who overcomplicates things. The heroes only have around 5 fighters who can give him a real fight and of those, probably just 2 who have a chance at beating him. He should have attacked straight up with a bunch of his monsters. Alternately he could have picked them off. No. 9 has the ability to shapeshift and tends to appear out of nowhere. The heroes are rarely ever fully mobilized so all he has to do is gradually take them out. There would usually be something to prevent that from happening but no such concept exists here.

The heroes are the underdogs by a wide margin and the author put them in too much of a hole here. There are countless ways to put the heroes out of their misery and instead No. 9 decides to have them all mobilized and then splits up his own forces to get picked off. Definitely a terrible general when you really think about it. I suppose he still came close to winning but it wasn’t exactly due to his own abilities.

No. 10 was another fun villain. This guy liked a good fight and he is the one who ends up partnering with Hoshina. He has a lot of pride and basically acts like one of the humans. This is exactly what I was hoping for. A Kaiju who could hold his own and wasn’t just roaring all the time. He was also really powerful as Kafka had to go all out here. No. 10 does have the misfortune of being one of the first Kaiju to show up so you could make the case that he is technically weaker than most of the numbers. I dunno, he still felt stronger than most to me but it’s hard to scale since he had to fight Kafka directly.

Then we have No. 15 who ends up fighting Kikoru. She really stands out because now we had a Kaiju who not only had character and dialogue but one who was even being manipulated. No. 9 is constantly dangling the lure of parental respect in front of her and shifts the goal posts so that she is always having to keep on fighting. He doesn’t actually care about her and that’s obvious to the reader but No. 15 still hopes that this can somehow happen.

No. 15 then tries using mind games in Kikoru as well. The only other one we see doing that kind of thing is No. 9 himself. So 15 feels like she is really a higher ranked Kaiju and she is incredibly memorable thanks to the design as well. She is like a dark Kikoru. While the other Kaiju could not live up to that, it was at least good to have one more complex villain like this.

These are the scenes that just made you feel like the series had more meat left on the bone. We also have the whole mystery of the Kaiju that gave Kafka his powers and the ghost samurai. It is explained by the end but it’s a bit more on the lackluster side. I just feel like it was shoved into the ending instead of being a cool subplot. Additionally the ending immediately reverses on itself which almost defeats the purpose of the storyline they decided to go with for the samurai in general. The final chapters have quite a few twists to hit you fast and hard with lore so maybe one day we will get a full sequel series.

At the end of the day you shouldn’t think too hard about missed opportunities though. There are no “ifs ands or buts” when you finish a story. It’s all about what was actually on the page and I was still more than satisfied with what we got. This was a great story with solid action throughout and a lot of battles. The fundamentals were all sound. The series may not have the strongest cast or excel in the peace between action segments but that’s exactly why it focused on action so much. You should always play to your strengths.

Overall, Kaiju No. 8 is definitely a great title. While it may have ended rather quickly where you felt like there was a lot of met left on the table, it did still give us a ton of battles. The series also lasted a bit longer than you would have expected and the final fight in particular was really satisfying. Both fighters really would not relent and just kept on getting up over and over. I also liked the ending which could have easily gone sideways. Maybe one day we will get some kind of a sequel series here.

Overall 8/10