The Isekai genre has taken the anime world by storm, and the Fall 2021 season continued the trend. The World's Finest Assassin Gets Reincarnated in Another World as an Aristocrat is a story that follows a master assassin who is reincarnated in another world to kill that world's hero. It is a series that appeals not only to fans of isekai but also to fans of dark fantasy as well.
For those who were quick fans of The World's Finest Assassin, there is a lot of other isekai anime to check out as well. Whether it's the dark fantasy elements or the overpowered nature of isekai protagonists, the following anime have a lot to offer.
Updated January 3, 2022 by Danny Guan: The World's Finest Assassin Gets Reincarnated in Another World's first season has wrapped up along with the rest of the Fall 2021 anime season, and isekai fans are waiting eagerly for the next season to be released.
Until then, however, they'll have to find something to tide themselves over in the meantime. Thankfully, there is a lot of isekai anime out there to watch, and the number is only growing. With so many different isekai anime to pick and choose from, fans of The World's Finest Assassin will have a lot of series to occupy themselves with.
15 The Familiar Of Zero
At the Tristain Academy of Magic, every second-year student must summon a familiar as their companion. Louise de la Valliere is considered the weakest student at school, but she swears that she will summon a great familiar that will shine above all others. When it comes time for her to summon a familiar, she ends up summoning Saito Hiraga, a normal boy from Japan.
The Familiar of Zero is a very popular fantasy series, with four seasons in total. Watching the initially tense relationship between Louise and Saito slowly grow into a passionate romance is great to watch, and the comedy is top-notch.
14 No Game No Life
Two step-siblings Sora and Shiro are undefeated gamers. After a battle with Tet, a self-proclaimed god, they are transported to Disboard, where all conflicts are solved by battle. They arrive in a land called Elkia, and decide to throw themselves into the games to rule over all species of Disboard in order to challenge Tet.
No Game No Life is an exciting anime with lots of risky gambits and tricky ploys. Sora and Shiro are both extremely cunning characters, and the way they battle and cheat through each game proves it.
13 Inuyasha
While chasing down a cat, Kagome Higurashi falls down a well, but instead of hitting the bottom, she instead reappears in a parallel universe centuries in the past. As she explores this new world, she accidentally unseals Inuyasha, a half-dog-demon boy who wants to find the Shikon Jewel so that he can become a full demon.
Inuyasha is a legendary anime and remains popular to the point that it has a follow-up in Yashahime. The adventures that Kagome and Inuyasha have are the central point of the story, but the romance between the two of them is also important.
12 Ascendance Of A Bookworm
A young librarian-to-be is killed under a pile of books during an earthquake. To her surprise, she is reincarnated in another world as a young girl named Myne, but one that lacks the books she so adores. After trying desperately to find a book, she ultimately decides to make books on her own.
Ascendance of a Bookworm is an interesting isekai, as it isn't really about superpowers and fantasy adventure. However, it is an interesting look at medieval life, especially on the subject of making books.
11 Overlord
A virtual reality MMO called YGGDRASIL is about to shut down after twelve years, and a player named Momonga decides to stay logged in until the servers shut down. Instead of leaving the game, however, he instead remains logged in, with everything appearing to have become reality and Momonga stuck looking like his game avatar. Taking on the name of his old guild, Ainz Ooal Gown, he decides to explore this new world and see if anyone else is trapped like him.
Overlord is an exciting fantasy anime, and Ainz Ooal Gown is one of the most powerful characters in anime. Watching his adventures as he journeys through this new world is quite exciting.
10 Problem Children Are Coming From Another World, Aren't They?
Three teenagers with psychic powers are summoned by Black Rabbit to the Little Garden, a world where people use their gifts to grow the influence of their community. There, they join Black Rabbit's "No Name" community and compete in the games together.
Problem Children Are Coming From Another World, Aren't They? is a pretty standard isekai anime with an interesting premise. This show is perfect for anime fans who enjoy watching characters use their powers in creative ways.
9 Arifureta: From Commonplace To World's Strongest
Hajime Nagumo, along with all of his classmates, is transported to another world to fight against demons. While his classmates all gain amazing powers, Hajime only gets a basic ability to transmute objects. When he is betrayed by a fellow classmate and left for dead in a dungeon, he must master his new power to survive.
Arifureta is darker than the usual isekai, and Hajime Nagumo, while initially a very generic main character, soon becomes a cynical and bloodthirsty anti-hero. While the series still has a lot of comedic moments, it is definitely more suited to fans of dramatic stories.
8 The Saga Of Tanya The Evil
After a cold-hearted salaryman is killed by a disgruntled subordinate, he gets into an argument with God and is reincarnated as a young girl named Tanya Degurechaff. Forced onto the battlefield as a child, Tanya uses her magical powers to gain accomplishments through the war and rise up the ranks of the military.
The Saga of Tanya the Evil is quite different in spirit from other isekai, but the quality of the story cannot be ignored. Tanya is a very compelling protagonist, and those looking for a different flavor of isekai will find it here.
7 The Rising Of The Shield Hero
Naofumi Iwatani is summoned to another world with three other heroes to fight hordes of monsters called Waves. Given the Legendary Shield, Naofumi is soon betrayed and disgraced by his supposed teammate and is left to fend for himself in a world where everyone assumes him to be a villain.
The Rising of the Shield Hero is a story of cruel betrayal, and Naofumi's struggle to fulfill his duties while trying to mend his reputation is a core part of the story. It's much less lighthearted than the other entries on this list, but fans of dark stories will find Shield Hero very compelling.
6 How A Realist Hero Rebuilt The Kingdom
After his high school graduation, Kazuya Souma is transported to another world and asked to become this world's hero. Unwilling to be a hero, Kazuya instead helps the kingdom that summoned him with their many problems and ends up being declared the new king.
How A Realist Hero Rebuilt The Kingdom is a series that focuses more on Kazuya's political savvy rather than his unique abilities. Still, there's a lot of exciting developments going on in this series that should be of interest to any fan of anime.
5 Re: Zero – Starting Life In Another World
Subaru Natsuki is suddenly transported to another world, where he is killed trying to help a girl that he meets. He soon discovers that every time he dies, he is sent back in time and soon learns to use his powers to help him and his friends avoid a terrible fate.
Re: Zero is very different from the usual Isekai, as Subaru is unable to use many powers outside of his ability to turn back time, and his attempts to change the future are wrought with struggle and failure. It can be hard to watch Subaru struggle to pick himself off the ground, but that's why it's also so satisfying when he finally succeeds. Re:Zero is one of the best isekai series in anime, and its popularity proves it.
4 KonoSuba
When Kazuma Sato dies an embarrassing death, he meets a goddess named Aqua who plans to send him to a parallel world. After a heated argument, instead of picking a special ability or item, Kazuma demands that Aqua accompany him, causing the two of them to end up in the parallel world together.
KonoSuba is a parody of isekai anime, one that accurately mocks all the various tropes and cliches of the genre. Having said that, it's also one of the best examples of an isekai, and a bundle of laughs that won't fail to have audiences falling apart.
3 That Time I Got Reincarnated As A Slime
When a salaryman dies while saving his co-worker, he is unintentionally reborn as a slime with a litany of powers. Eventually gaining the name Rimuru Tempest, he slowly explores the world around him as he gets used to his new body.
That Time I Got Reincarnated As A Slime is probably one of the most creative isekai anime out there, particularly with how Rimuru utilizes and leverages his unique powers. He may be an unconventional hero, but it is definitely interesting to see how he develops as time passes.
2 Drifters
As he lies on the battlefield while bleeding to death, Shimazu Toyohisa is suddenly transported to another world, where he joins Oda Nobunaga and Nasu no Yoichi in becoming "Drifters". They fight back against the Ends, who are trying to take over the world while establishing an empire of their own.
Drifters is very different from the usual Isekai, especially since it makes use of historical heroes. However, it is fun to see important people in history come together, and Drifters provides a lot of dramatic tension and brutal combat.
1 Mushoku Tensei
An overweight, unemployed otaku is kicked out of his home, and as he regrets his life's trajectory, he attempts to save a high schooler from being run over and is killed. Miraculously, he finds himself reincarnated as Rudeus Greyrat and resolves to make the most of this second chance at life.
Mushoku Tensei is particularly enjoyable because it features a main character who uses his past life to motivate himself. His desire to not become the same kind of person he was before is very relatable and gives viewers a stake in his personal growth.