That Time I Got Reincarnated as a Slime Season 2

That Time I Got Reincarnated as a Slime Season 2

That Time I Got Reincarnated as a Slime Season 2 anime series cover art
That Time I Got Reincarnated as a Slime Season 2

Attack on Tempest

That Time I Got Reincarnated as a Slime Season 2 (Tensei shitara Slime Datta Ken 2nd Season / 転生したらスライムだった件) was split into two cours. The first aired during the winter season and the second aired during the summer season. Since I didn’t do a review specifically for the first cour, I’m going to cover both today.

Most of the first cour is about an attack on the nation of Tempest. This was a pretty good arc because, seemingly for the first time, Rimuru isn’t able to save the day (immediately, that is). That’s a good thing because it adds some real conflict and drama.

Sure, there was conflict in the first season. But the conflict then was more like “how is Rimuru going to defeat this opponent?” We knew he was going to win, just not how exactly his victory was going to come about.

In this cour, Rimuru actually gets into a fight he’s unable to win and he’s also unable to save all of his friends. Specifically, he can’t defeat Hinata since he doesn’t want to kill her, and was unable to protect the city and lost Shion as a result.

Of course, Rimuru later saves everyone who died, including Shion, so it didn’t matter in the end. But at least for a few episodes, there was uncertainty surrounding whether his mass resurrection plan was going to succeed or not.

Even if the entire season was just this one cour, I’d have rated it higher than the first season. It was less of the city-builder stuff I know a lot of people like. But I think the focus on better plot and character development more than made up for that.

Birth of a Demon Lord

At the end of the first cour, the most important development of the entire series thus far occurred. Rimuru earned the title of Demon Lord by performing a one-slime genocide and killing thousands of soldiers from the nation that attacked Tempest.

Why does Rimuru becoming a Demon Lord matter? Well, for starters, he’s already friends/allies with a few other Demon Lords (Milim, Ramiris, and Carrion). So, now that he’s one as well, Rimuru can lead his nation on equal terms with his most powerful allies.

There’s also the fact that the second cour of this season starts an arc that’s all about the Demon Lords. In this sense, it’s Rimuru becoming a Demon Lord that launches the next arc of the series. But, there’s something that I think is even more important that came from Rimuru acquiring his new title.

Demon Lord Rimuru Tempest from the anime series That Time I Got Reincarnated as a Slime Season 2
Demon Lord Rimuru Tempest

Rimuru becoming a Demon Lord itself is neat. He gets some power-ups, after all. But the biggest change between pre- and post-Demon Lord Rimuru is that we now know he’s willing and able to commit genocide against humans.

I think it was something like 10,000 – 20,000 people he killed, all of whom were human. That’s pretty major when you consider he used to be a human himself. So, this shows that he’s farther from his humanity than he’s ever been.

Additionally, some of those people he killed were Otherworlders just like him. And yet, he didn’t think twice about eliminating them in order to get his revenge.

From what I remember, Rimuru did mention something about feeling less connected to his humanity as he spent more time in his slime form. But, before he committed this genocide, he still had a rule in his nation about not killing humans specifically because he used to be one.

Walpurgis Arrives

When all the Demon Lords gather together, the event is referred to as Walpurgis. Clayman, along with Frey and Milim, was the one to call for the Walpurgis that takes place in the second cour of the series.

He had two primary reasons for calling for a Walpurgis. First, he wanted a chance to defend his decision to launch an attack into Carrion’s domain (which Rimuru’s army fought off). It’s forbidden for Demon Lords to attack each other like that, so Clayman needed an opportunity to explain himself to the others.

The second reason he had for calling this Walpurgis was to discuss what to do about Rimuru, the latest person to refer to themself as a Demon Lord. Obviously, Clayman’s opinion is that Rimuru shouldn’t be admitted into the Demon Lord council and should instead be eliminated.

Demon Lord Milim Nava from the anime series That Time I Got Reincarnated as a Slime Season 2
Demon Lord Milim Nava

Rimuru eventually kills Clayman in front of the other Demon Lords, and then both Carrion and Frey relinquish their Demon Lord titles. Those developments are important, but what I found to be much more interesting is that we learned there are “Demon Lord” and there are awakened, or true, Demon Lords.

It’s just so strange to me that people who don’t actually hold the official title of Demon Lord are allowed to claim to be Demon Lords. That seems like it would water down the Demon Lord brand. Like, for instance, Clayman was weaker than Shion and still allowed to call himself a Demon Lord.

The fact that there are multiple tiers of Demon Lord does make me wonder how high the power scaling of the series goes. It’s been heavily implied that the true dragons like Veldora are stronger than the Demon Lords. But is there anyone else? Where does the Hero Hinata stand? I guess we’ll just have to wait for the next season and hope it answers those questions.


That Time I Got Reincarnated as a Slime Season 2 was a 6/10 overall. In fact, I rated both cours of the season at that score, which is one point higher than what I gave the first season. It really was an improvement on the first season, in my opinion.

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