That Time I Got Reincarnated as a Slime

That Time I Got Reincarnated as a Slime

That Time I Got Reincarnated as a Slime anime series cover art
That Time I Got Reincarnated as a Slime


That Time I Got Reincarnated as a Slime (Tensei shitara Slime Datta Ken / 転生したらスライムだった件), also known as TenSura, is finally complete, so it’s time to discuss my thoughts on the first season as a whole. And, as any of you who have been reading my episode reviews will know, I didn’t like it.

Before I really get into it though, let me just give a brief summary for those of you who have been living under a rock for the past six months. This is another isekai anime, but this time the protagonist has been reincarnated as a slime. Sounds decent, right? Well it’s not.

The first episode mirrored my initial impression of the series. I figured this was going to be a comedy anime, and that it would throw some ecchi in because the protagonist is a slime after all. There’s no fantasy monster more connected to ecchi than slimes.

However, by the time we hit the second episode it’s clear this isn’t actually going to be the case. Not only is this not an ecchi, but it’s also not even a comedy. Alright, so it’s not an ecchi comedy, that’s fine, it doesn’t have to be.

Then the series starts to pretend it’s actually a shounen battle series, which I’m fine with too. If you’ve looked through the archives on this site you’ll know I watch all sorts of different genres, so whatever this series ends up on should be fine with me.

But, just like the ecchi comedy, the whole battle aspect of the series was also just a bait. There’s no real action like in Naruto or My Hero Academia, or any of the typical shounen battle series. So, then you look at the genres it’s tagged as and it’s just shounen and fantasy.

Identity Crisis

So, this is a fantasy series for a young, male audience. But, it’s not an action, comedy, adventure, or romance series. In fact, it’s not even slice of life. So, what exactly is the plot and why do I care?

Well, at least the genres it’s tagged as aren’t lies. It’s definitely a fantasy series due to the setting, and it’s definitely a shounen because the plot is simply, “the power of friendship.” Literally the plot is just that the protagonist makes friends with all sorts of different people. That’s it.

And, if that sounds boring to you, that’s because it is.

This series tried to sell itself as a comedy with the perfect setup for an ecchi series, and then later as a battle series, but turned out to be neither. And, if I’m being honest, it would have been better if it followed either one of those two routes.

The premise of being reincarnated as a slime is just too perfect for an ecchi series to pass up. And there would have been so many gags that could be pulled due to the protagonist being a slime. It would have been a great comedy anime.

On the other hand, actually having an end goal and conflict that mattered would have made this a good action anime, assuming that some fight scenes were actually choreographed (which they weren’t). But, I get it, the people who like this anime like it regardless of the genre it is.

My only question to those of you who think this anime is great is, what does the original premise of the series have to do with what it ended up being, and how does that make it better? Seriously, what does Rimuru being a slime have to do with anything?

The entire gimmick of this series (isekai always have a gimmick of some sort these days) is that Rimuru is a slime, but that has nothing to do with the plot. The fact that he’s a slime is rarely used in any meaningful way, and he doesn’t even have an end goal related to it like, “I want to not be a slime anymore.”

It’s basically like if in the anime In Another World With My Smartphone, the main character had a smartphone, but that was it. It was just a regular smartphone with no service because he’s in another world.

The big gimmick, the fact that Rimuru is a slime, is completely wasted due to this series having no real direction.


But, having a real plot isn’t actually necessary for an anime to be good. In fact, slice of life anime often don’t have overarching plots and yet they can still be great thanks to strong character writing. Unfortunately this is another think TenSura is lacking.

Starting off with our protagonist, Rimuru, he’s a slime, yes, but that’s really all there is to him that makes him unique in any way. He’s a bland, overpowered protagonist with a big heart. You know, just like every single other shounen protagonist out there.

Rimuru Tempest in his Slime form from the anime series That Time I Got Reincarnated as a Slime
Rimuru Tempest

As for the rest of the characters, they’re all pretty bland as well. The best character in the series we’ve met so far is Milim, and that’s mainly because she has a nice character design and is the embodiment of pure chaos. You never know what Milim is going to do next, and so that makes her fun to watch.

I think the worst part of most of the side characters are their designs. They aren’t necessarily bad, but they were all much more unique when they were first introduced. Then, Rimuru names them all, and their appearances shift to become much more human.

This lessening of their individuality, combined with the fact that most of them are pretty bland personality-wise, just makes most of them forgettable. Gabiru is a notable example here, but again, the best scene he was in of the whole series also involved Milim, so it was really her who carried the show.

But, I can’t only say bad things about this series because the truth is it isn’t the worst anime out there. I actually really liked the character background episodes, so there’s still hope for the series. By these I mean the episodes on Shizu’s and Black’s pasts respectively.


In the end, I’ll give this first season of That Time I Got Reincarnated as a Slime a 5/10. It definitely wasn’t one of the worst anime I’ve seen, but neither was it one of the best, or even one I would consider good. It’s about as average as a series can get, so that’s the score it deserves.

I know you guys have strong feelings about this series in particular, so I’m looking forward to seeing what the comments are like on this final TenSura review of the year. But, if you enjoyed this review, make sure you click the like button ❤ down below.

You should also follow me over on Twitter @DoubleSama because I tweet out every time a new one of my posts go live. And, what you might not know is that I don’t only write for this site, but others as well. Links to all of my work can be found on Twitter.

Finally, I’d like to thank HeavyROMAN for supporting at the Heika tier this month. If you’re interested in becoming a supporter of this blog too, then check out for more information.

My review of Season 2 is available now.

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4 Replies to “That Time I Got Reincarnated as a Slime”

  1. There is a technical reason for the author to choose a slime as the protagonist to avoid dense romantic plots due to the impossibility of having sex or even transforming into someone else because he is still asexual to prevent the protagonist from being full of wives and childrens, as is the case in all the isekai’s starring men (even Nao ends up fucking every woman that find)

    1. The major flaw with this line of reasoning is that slimes are typically portrayed as some of the most ecchi of all monsters. They usually do things like melt clothes of women, and when they take humanoid forms are often sexualized. It’s the perfect setup for an ecchi or hentai series, and would have worked for an ecchi comedy.

  2. Your points are well thought out and reasoned. From a critical view I can appreciate why you would rate it 5/10. For me however it’s refreshing to see an asexual character since it can feel more like a chore to watch all the romance subplots and drama. I like that time I got reincarnated as a slime for more reasons though. For someone with a busy life and plenty of stress watching this anime has been relaxing. Seeing something that feels simple and straightforward with a protagonist who honestly I identify with (who wouldn’t want to make a super powerful trade nation if given the chance?) has been a refreshing change. It doesn’t feel like it’s rushing the story to get to all the exciting parts. It does feel kind of like a city building sim though. I find it refreshing. As someone who isn’t a critical thinker it’s enough if I can enjoy the show. I’m glad it exists. I really do hate the evolution designs though. Most of the characters were much more visually interesting before they were all prettied up to look more human.

    1. If you haven’t seen it already I think you might enjoy One Piece based on what you’ve said here. Sure, the Straw Hats don’t create a powerful trade nation, but they hit just about every other point you said you liked about this series.

      As for anime based on trade, Spice and Wolf is a much better option even if it’s not a city building sim. If you’re into economics, building trade routes, and drunk fox girls that’s the anime for you.

      And I’m sure there are better suggestions I could make, but those are the two series that immediately came to mind when I read your comment.

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