Tag: Isekai Quartet

Isekai Quartet 2

Isekai Quartet 2

Isekai Quartet 2 anime series cover art
Isekai Quartet 2

What’s New for Season 2?

Isekai Quartet 2 (異世界かるてっと2) is obviously the sequel season to Isekai Quartet, the half-length anime which is a crossover between four isekai anime series. I’m not going to spend too much time going over this because you can just check out my review of season 1, but Isekai Quartet includes characters from Re:ZERO, KonoSuba, Overlord, and Tanya the Evil.

So what’s new for season 2? Nothing really.

There are a few characters from newer anime featured in this season, but I’ll be discussing them in the next section. Aside from that, though, the main difference between the first season and this one is a couple of new supporting characters who were added in from the four original series.

For example, Chomusuke, Megumin’s demonic cat, makes her first appearance as a “transfer student.” There are also a few other side characters ported over from both Re:ZERO and Overlord. However, I don’t specifically remember any new characters from Tanya the Evil being added.

As for the “plot” of the series, that’s the same as it’s always been. The characters from these various series need to work together to have a good school life so that they can go back to their respective (not original) worlds. And I’m going to spoil this right now, they don’t make it back — sorry.

The OP and ED for this season are also pretty similar to those of season 1, but I actually liked the season 1 songs more. This ED, however, features the secondary female characters of each series rather than the main female characters.

Season 1’s ED features Emilia, Aqua, Albedo, and Tanya. Season 2’s ED features Rem, Megumin, Shalltear, and Viktoriya.

New Series Characters

If you’ve already watched season 1, then you’ll be aware that characters from the anime The Rising of the Shield Hero were revealed to be in season 2. Three characters from that series were included in Isekai Quartet 2: Naofumi, Raphtalia, and Filo.

Now, if you’re anything like me when you saw that reveal you were probably thinking, “They can’t call it Isekai Quartet if it’s an isekai quintet now!” And if that’s the case, you’ll be happy to know that the Shield Hero characters don’t really play a role in this series at all. They’re basically just background characters who get a few lines per episode — if that.

Filo and Raphtalia (The Rising of the Shield Hero) from the anime series Isekai Quartet 2
Filo and Raphtalia (The Rising of the Shield Hero)

But actually, after completing the entire season, I think the Shield Hero characters would have been better off as full characters in this series. The reason being that it just felt weird to include them, but then to also make them nothing more than background characters.

Adding in main characters from an entirely new series isn’t the same as adding in supporting characters from the original four series, and it felt odd that it was treated like it was. Either commit to making them real characters or limit them to a single cameo (or cut them altogether).

Also, I was considering spoiler tagging this, but there’s an image later on in the review which will spoil it anyway, so I’ll just come out with it. Shield Hero isn’t the only new series that got characters in Isekai Quartet 2. Cautious Hero: The Hero Is Overly Powered but Overly Cautious was also featured.

Both Seiya and Ristarte made it into season 2, but these two really were featured in more of a cameo role. I only remember them making an appearance in one episode, but they may have been in the last two.

Predictions for Season 3

There’s not really much else to discuss in regards to season 2, so I figured now would be a good time to make some predictions regarding season 3 since it’s been confirmed. And for my first prediction, I don’t think this will be the final season.

I do think that Isekai Quartet is going to end somewhat soon, but I think they can get a fourth season out of it still. As for why I think it’s going to end, I’ve heard that Overlord is ending. Of course, the Overlord anime isn’t ending just yet (unless they decide to cut it short), but I think once that does end we might see the end of Isekai Quartet as well.

It’s possible that Isekai Quartet could continue even after the end of Overlord, or that Overlord could be replaced by Shield Hero or Cautious Hero, but I don’t see it happening. I think they’ll just move on to something else instead and leave the Isekai Quartet series as a finished product.

Ristarte and Seiya (Cautious Hero: The Hero Is Overpowered but Overly Cautious) from the anime series Isekai Quartet 2
Ristarte and Seiya (Cautious Hero: The Hero Is Overpowered but Overly Cautious)

I also expect to see the Shield Hero characters play a larger role in the next season. They were turned into supporting rather than background characters at the very end of season 2, so I think season 3 will feature them a bit more. And with this, the Cautious Hero characters may be upgraded as well.

Of course, I still think the characters from these other series will be supporting characters, not main characters, but at least they won’t be background characters.

And, I wouldn’t be surprised if we saw the inclusion of characters from yet another new series. Maple and Sally from BOFURI: I Don’t Want to Get Hurt, so I’ll Max Out My Defense seem like prime candidates to me for inclusion into this series at least in a cameo capacity. BOFURI isn’t exactly an isekai, but it’s close enough.


Overall, Isekai Quartet 2 is a 6/10 from me, which is what I rated the first season as well. I enjoy watching it, but I still think that the four main series which make it up are better than Isekai Quartet individually. I’d rather watch any of those anime over this crossover.

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Isekai Quartet

Isekai Quartet

Isekai Quartet anime series cover art
Isekai Quartet


Isekai Quartet (異世界かるてっと) is one giant cross-over episode in series form. And it doesn’t just cross over two or three anime, but four of them (hence the “quartet” in the title). But, as is the case with most cross-over episodes, it’s actually worse than the individual series which make it up.

The plot goes something like this: characters from four different isekai anime get isekai’d into another world in which they have to play school. The only way for them to be returned to their own “other worlds” is to come together as a class. Also the teachers at this school are from their various worlds.

So as you can see, there’s not really much of a meaningful plot here. But, that’s not really the point anyway. The point of this series is to see characters from your favorite isekai anime interacting with each other. It’s fan service, pure and simple.

Luckily, the four isekai in this cross-over are actually the four best isekai around. And, although the ratings I gave to each of them may not fully align with that sentiment, it’s the truth. For example, I gave How Not to Summon a Demon Lord a higher score than Overlord, but I’d still rather watch Overlord.

Different Worlds

Speaking of Overlord, that’s one of the series featured in this anime. The other three are The Saga of Tanya the Evil, KonoSuba, and Re:ZERO. And, while this might be a minor spoiler, at the end of the season we’re told that some transfer students are coming into the school. Does this mean the quartet is going to become a quintet?

I’m not so sure about that. It’s possible that another series will be added to the mix, but there are two reasons I think this won’t be the case. First, it would no longer be a quartet. Second, what other series would be added? I honestly can’t think of another one that I would want added to the mix.

Aqua, Albedo, and Rem from the anime series Isekai Quartet
Aqua, Albedo, and Rem

Anyway, this school world is a bit different than the other worlds our characters come from. The most notable difference for the characters themselves is that it’s peaceful. While Ainz and Tanya are wary of this, Kazuma and Subaru are fully accepting of their new life — Kazuma more so.

Each of the characters also retain their abilities within this world. That means Kazuma can still steal panties, Ainz and Tanya are still overpowered, and Subaru can still force himself to have a heart attack by trying to tell someone he can return by death.

However, it’s implied that Subaru’s actual return by death ability is nullified in this world. So basically while everyone else gets to keep their cool powers, Subaru only keeps the demerits of his.


Overlord is the series of the bunch which I would rate the lowest. I think it has a great story and some pretty good characters, but it has a major flaw. That flaw is that it uses bad CGI, and the usage of bad CGI increases with every passing season.

The characters from Overlord which are in the main class in Isekai Quartet are Ainz, Albedo, Cocytus, Aura, Mare, Shalltear, and Demiurge. Basically all of the floor guardians of the Great Tomb of Nazarick. These are the ones who aren’t here to mess around and make friends (other than Ainz).

The Saga of Tanya the Evil

Tanya the Evil is the only one of these series I haven’t actually reviewed yet on this site. The reason being that I’ve actually seen all of the first season except for the first two episodes. At some point I’ll go back and rewatch the series in its entirety.

The characters from Tanya the Evil which are in the main class are Tanya, Viktoriya, Erich, Matheus, Warren, and Rhiner. While Tanya takes this situation very seriously because she believes it’s the work of Being X, her men don’t seem to mind all that much.


KonoSuba is my personal favorite isekai anime. It’s also the highest rated comedy series I’ve ever watched. The KonoSuba characters in the main class are Kazuma, Aqua, Megumin, and Darkness. As a side note, while most side characters are in the second class, Yunyun is alone in the third.

Darkness, Kazuma, Megumin, and Betty from the anime series Isekai Quartet
Darkness, Kazuma, Megumin, and Betty

I also like how the KonoSuba characters react to this situation the most — aside from Darkness since she’s my least favorite. Aqua just wants to be in charge of everyone and kill the undeads, Megumin wants to show off, and Kazuma wants to stay in this world forever so he doesn’t need to go on adventures with his useless party.


Re:ZERO is my second favorite isekai anime. The characters from this series are the most accepting of the new world in which they find themselves, though they would like to return home at some point. The characters in the main class are Subaru, Emilia, Betty, Puck, Rem, and Ram.

Subaru, Emilia, and Rem in particular have fully embraced their new school lifestyle, even more than Kazuma who doesn’t want to leave. Rem and Albedo even strike up an unlikely friendship due to them being completely obsessed with their respective series protagonists.


In the end I had to give Isekai Quartet a 6/10 because while it was enjoyable, it wasn’t that enjoyable. I felt like there was a lot of inter-series interactions missing, as the majority of the characters stuck to their own groups.

Also, we never got a conversation between Megumin and Emilia. I really wanted Rie Takahashi (the voice actress of both of them) to have a conversation with herself. That just seems like a huge missed opportunity right there.

But which series featured in Isekai Quartet is your favorite? Are you team Overlord, Tanya, KonoSuba, or Re:ZERO? Also, if a fifth isekai anime was to be thrown into the mix, which one do you think it would be? Or which one would you want it to be? Let me know in the comments.

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My review of season 2 is available here.