Within the anime industry, there are many genres, each focusing on a different type of story, and it is said to be one of the most popular for sure. Isekai anime genre. The Isekai series features a main character who is usually transported to another worldAnd while the genre has certainly gotten a bad reputation over the years, it seems that, thanks to some high-quality anime adaptations, it's on the rise again.
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recently, The top 9 most streamed Isekai anime series in Japan were revealed via ABEMAAnd the number one choice may come as a surprise to many. That time I got it is officially revealed as Japan's most popular Isekai animeBeating Re:Zero and Mushoku Tensei. In the next few years, fans can see a huge influx of Isekai as they become popular around the world.
At that time I saw A Slime reborn as Japan's biggest Isekai anime
Isekai is definitely a very interesting genre of anime. The concept is quite simple, where the character is transported to a new, completely different world, and from there, the options for building exciting stories are almost endless. Japan loves the Isekai series a lotAnd their popularity has remained high for years now. That said, the Isekai genre is pretty oversaturated, but some series definitely stand out among the rest.
To determine the most popular Isekai out of the bunch, ABEMAA giant streaming service in Japan, has revealed 9 most streamed anime that fall under the Isekai category. This was for “Good Other World Day”, which fell on November 12. Thus, ABEMA's “Final Rankings for Isekai Anime” has been unveiled, and The best Isekai anime is none other than 'The Time I Got Reincarnated as a Slime'. This result may surprise some, but it makes sense. That time I was reincarnated as a slime is popular overseasBut in Japan, it has become a monumental anime.
The story of 'The Time I Got Reincarnated as a Slime' as the name suggests follows the story of a real-world man who died and was reincarnated as a slime in a completely different world. Then he takes the name Rimuru Tempest. This anime Premiered in 2018 With its first season, and now, it has three seasons, with the last one releasing in 2024.
Other top 9 Isekai anime from Japan have also been released
At that time I was reborn as a slime ABEMA platform. However, the rest of the top 9 are also made up of interesting series. Here is the complete list for the final ranking for Isekai anime:
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At that time I was reborn as Slim
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overlord
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Excellence in shade
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Mushoku Tensei: Unemployed Reborn
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Is it wrong to try to pick up girls in dungeons?
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Re Zero – Starting life in another world
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KonoSuba: God's blessing on this wonderful world
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Rise of the SHIELD hero
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Sword Art Online
That's when I'm reincarnated as a slime writer when the series can end
Fuse revealed that the time I was reincarnated as a slime might be over sooner than fans thought.
All of these series are important to the Isekai genre, and even fans overseas should be able to easily recognize many of them, especially Like Re:Zero or Sword Art Online.
Isekai anime is gaining popularity all over the world again
The Isekai series has always been huge in Japan, but overseas, it's definitely not the most popular, especially because of how overdone it is. Most of the series in the genre are fairly similar and feature low-grade comedies. Some others cover unusual or rather idiosyncratic topics that may not appeal to fans.
Still, it seems that the Isekai genre is growing in popularity again, as seen with some 2025 hits. Lord of the Mystery was one of the biggest Isekai anime of the yearAnd it certainly lived up to the hype. Fans are definitely excited for more. Solo Leveling is also one of the most popular anime series outside of Japan Now, and while it is not an Isekai, many of its elements are taken from the genre, and thus, it cannot be completely separated.
Source: PR Times
