Sekai Saikou no Ansatsusha, Isekai Kizoku ni Tensei suru

The World's Finest Assassin Gets Reincarnated in Another World as an Aristocrat

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Alternative Titles

Synonyms: The world's best assassin, To reincarnate in a different world aristocrat, Ansatsu Kizoku
Japanese: 世界最高の暗殺者、異世界貴族に転生する
English: The World's Finest Assassin Gets Reincarnated in Another World as an Aristocrat
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Type: TV
Episodes: 12
Status: Finished Airing
Aired: Oct 6, 2021 to Dec 22, 2021
Premiered: Fall 2021
Broadcast: Wednesdays at 23:00 (JST)
Licensors: None found, add some
Source: Light novel
Genres: ActionAction, DramaDrama, FantasyFantasy, MysteryMystery, RomanceRomance
Themes: IsekaiIsekai, ReincarnationReincarnation
Duration: 23 min. per ep.
Rating: PG-13 - Teens 13 or older


Score: 7.361 (scored by 270992270,992 users)
1 indicates a weighted score.
Ranked: #23342
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.
Popularity: #423
Members: 494,176
Favorites: 4,001

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Ranked #2334Popularity #423Members 494,176
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The world's greatest assassin had sworn lifelong allegiance to the organization that raised him. However, despite his loyalty, that very same organization takes action to silence him, ultimately leading to his demise. Drowning in frustration and regrets he can no longer suppress, he finds himself in an audience with a goddess attracted by his exceptional skills. The goddess offers him reincarnation into a magnificent world of swords and magic so he can perform a crucial mission: prevent that world's destruction by slaying its hero.

Accepting the goddess' request, he is reborn as Lugh Tuatha Dé, the son of a noble family of assassins serving the Alvan Kingdom. Under the guidance of his father, Lugh learns new assassination techniques that significantly differ from the cold-blooded and unsympathetic killing style of his previous life. Furthermore, his other talents bloom, allowing him to meet new allies and acquaintances. Even so, Lugh knows that his efforts are far from adequate, because a monumental adversary such as the hero can only be defeated with perfection.

[Written by MAL Rewrite]


Sekai Saikou no Ansatsusha, Isekai Kizoku ni Tensei suru adapts the first volume of Rui Tsukiyo's light novel series of the same title.

Related Anime

Characters & Voice Actors


Takahashi, Chiaki


Momosuzu, Nene

Tuatha Dé, Cian

Morikawa, Toshiyuki

Liannenon, Epona



Matsukawa, Hiroki



Opening Theme

Apple Music
Amazon Music
Youtube Music
"Dark seeks light" by Yui Ninomiya

Ending Theme

"A Promise" by Aira Yuuki (結城アイラ)


Jul 19, 2023
Sekai Saikou no Ansatsusha, Isekai Kizoku ni Tensei suru, also known as "The World's Finest Assassin Gets Reincarnated in Another World as an Aristocrat," is an exceptional anime that seamlessly weaves together action, adventure, and heartwarming moments into a captivating narrative.

The animation in this anime is nothing short of breathtaking, with beautifully detailed landscapes and adrenaline-pumping combat sequences that immerse you in the fantastical world. The character development is outstanding, especially the protagonist's transformation from a skilled assassin to a nobleman on a quest for redemption.

As the story unfolds, we witness a compelling journey of growth, self-discovery, and the pursuit of a new purpose. The ...
Aug 29, 2023
Mixed Feelings
At first you expect a series of the lot but the episodes go by and try to be different although this does not achieve it so much for the simple reason that it has many clichés of reincarnation series, they want to turn it around as they present it, because the reincarnated He is a person with great ability and not just anyone, it is interesting how the episodes go by since I really liked the plot, it is one of those simple series in its realization but with interesting concepts (not impressive or innovative, just interesting), come on seeing how the reincarnated was not ...
Apr 23, 2023
A decent isekai/fantasy anime series that is largely plot-driven with a few good character moments. I quite like the main character but I wanted to see more character development scenes, and more moments of insight with him. Often it feels as if I'm not experiencing the story with the main character and just observing it as an outsider, with little emotional attachment or investment. Not a lot stood out for me in this anime series except for episode 6. If you're not great with witnessing trauma, this might be an incredibly tough watch. There are moments of brutality here and there throughout this series but ...

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