Ore wa Seikan Kokka no Akutoku Ryoushu!

Although I could easily dismiss this anime as just another author’s self-insert or indulgent fantasy, I’d much rather believe that the main character’s background is purely a product of imagination—completely detached from any real-life experience. And if, by any chance,it's actually real and some viewers do find it relatable… well, may God bless and bring peace to their souls.

That said, this is an isekai, so don’t set your expectations too high. The story, animation, and music are all fairly average across the board.

As for the plot, it’s your typical “miserable life gets a second chance” setup. But instead of being reborn into a world of ... magic and swords, the protagonist finds himself in a Gundam-esque universe. So, fair warning: if you’re into giant mechs, this show might be right up your alley.

Narratively, it’s nothing groundbreaking. Is it better than most of the bottom-tier isekai? To some extent, yes. Is it entertaining? Definitely—mainly because it’s a revenge story. Speaking of which, the title itself hints at a potentially edgy protagonist, and that assumption would be correct. Still, given everything he’s endured, his darker personality is understandable. It’s what people these days might call a “reasonable crashout.” Even so, he’s far from the edgiest character ever written.

As for the animation and music—both are mediocre at best. It’s clear the studio didn’t allocate much budget to this adaptation. The fight scenes aren’t terrible, but they’re far from impressive. There’s definitely room for improvement.

Overall, this anime is a middle-of-the-road isekai with a familiar premise, decent execution, and a touch of mecha to set it apart. It won’t blow you away, but if you’re in the mood for some light revenge-fueled fun with giant robots, it’s worth a casual watch.

I was really hyped the moment I saw this one getting adapted. Having read and continuing to read it when it gets updated on narou I'm what you could consider a fan, but this anime is simply awful.
 
The original version is the narou's one. The author was actually making a break by writing it.
The lack of an actual roadmap is felt all along but each arc is actually structured and interesting, making its success unsurprising, as the author being knows, he already had a fan base.
 
Then it got the published novel version. I didn't read it, though I do have read enough to know ... that narou works being published are... A bad thing.
The whole point is that they add parts to make it interesting for the original fans, but success is fleeting and making a new story is a no-do. So those news parts are unimpactful even when they should actually have some consequences, turning them into a complete loss of time.
I had some hope with this author, his success not being simple luck but actual skill, having others work adapted such as Seventh and Otome Game Sekia wa Mob ni Kibishii Sekai desu. But, hope is just hope.
 
Which brings to the manga and after that the anime, which happen to take on the manga sometimes rather than the novel, making it an adaptation of an adaptation of an adaptation of an adaption. Great, I'm sure you can feel the improvement of each step, but... Well, copy/paste actually degrades the original.
 
Now, onto the actual anime. There are 3 things that completely killed the original charm of this work.
 
The first one is the pacing.
The story begins with the Mc fighting then go back into the past to explain how he came to this point. This is a usual trick when the beginning is slow, making an action part that makes you want to watch it so that you stay here while its more boring part comes just right away.
I, didn't like it, because it was cheap and not interesting at all, but even so, I thought that it was used at the beginning only and then there would be the actual story.
But they just kept on going with this dumb pacing, replacing the action part with what was happening to another character in the following episodes.
It is a stupid move because not only it breaks the pacing, but you don't event know the character so... You don't care.
Oh, and it is also a boring typical development so, go luck to even care.
 
The second one is the past of the Mc.
It takes the whole first episode. Does it need to take that much? Is it interesting enough to take 20 minutes? No.
The narou version actually nearly skips it, it is just an introduction after all, a typical way to show how the Mc became like this, you don't need the day.
The anime version though, is sluggish. Nothing to do with the actual story nor anything and yet taking the whole episode. Not only it is bad, but it did worse by changing what happened.
The narou version was slow but it was mentioning how the Mc found his wife lingeries becoming daring, her changing her appearance, some little steps hinting at her cheating in his everyday life. It showed that it was actually a true possibility, having the husband finding small changes and finding out too late on one side. And a typical wife having a hazardous meeting with a bad boy that changed her and broke her life then ditch her out once bored on the other side.
When you learn why it happened, it is logical because just a bit of misfortune can make such a misstep happening.
Now, the anime version though? The wife is just the same, not getting gaudy nor anything. They made his child not his child for whatever reason making the whole cheating story long of at least 7 years. Because of those changes, it isn't just a misstep anymore. The Mc simply wasn't looking at his own family for at least 8 years. How the hell can he be allowed to desire any revenge when it feels completely like his fault? This is simply stupid, borderline comical but they did not try to make it comical.
Let's add that the other guy seems to want to actually marry his wife after it, making it an even more average relationship trouble.
 
The third one is the Mc.
Now, you'll probably don't get it. Even so more if you watched this anime.
The Mc is great. Seriously. The guy always seems pissed off, he doesn't talk much, is straight and full of himself when talking and acting. All that because he has trust trouble coming from his previous life and decided to live for himself. The whole success of the original work comes from him.
The Mc of the anime though? He's just Mc number 19052462. All his reactions are those of a typical Mc. Overreacting, not thinking, having a change of expressions at each sentence, like every other Mc. The guy is boring, They made him the usual Mc. Making the whole work having its charm taken from it.
I know that many have liked the sentence part in the third episode, but it wasn't that long originally. He knew that someone was making use of him and just sentenced, no whole excuse with a traumatizing past scene in it, his past was already talked about, and as such, his choice already explained. That just made the whole scene flattened.
Even the whole Yasushi comical parts became longer and dumber.
What's even the point of looking at his prowess if he isn't someone badass anymore?
 
As I say, I was hyped about it and am a fan of the original work, but even for a fan, it was just a boring bouncing around average isekai.
Kind of hard to say anything good about it.