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

TV series

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

2021TV-142 seasons8.1 / 10

The world's number one assassin has been reincarnated as the eldest son of a family of aristocrat assassins. In exchange for being reincarnated in another world, a goddess has imposed upon him one condition. "Kill the Hero who is prophesied to destroy the world." This was to be the mission in his new life. The synergistic effect of the vast knowledge and experience he gained that made all manner of assassinations possible in the modern world, and the secret techniques and magic of the fantasy world's most powerful family of assassins turn him into the greatest assassin of all time.

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Checked Jul 22, 2026

The World's Finest Assassin Gets Reincarnated in Another World as an Aristocrat is available to stream on Crunchyroll Premium (Via Amazon Prime) in United States. Use the direct links below to open the provider.

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Synopsis

The world's number one assassin has been reincarnated as the eldest son of a family of aristocrat assassins. In exchange for being reincarnated in another world, a goddess has imposed upon him one condition. "Kill the Hero who is prophesied to destroy the world." This was to be the mission in his new life. The synergistic effect of the vast knowledge and experience he gained that made all manner of assassinations possible in the modern world, and the secret techniques and magic of the fantasy world's most powerful family of assassins turn him into the greatest assassin of all time.

Season 1 episodes

Choose an episode, then use the watch options above for the show.

Episode 1

Quantum of Trust

Oct 6, 202124m7.6 / 10

Pretty young girls have been captured and are being sold off at an illegal auction. Marquess Collide is engaging in human trafficking, and all her buyers are evil nobles as well. By royal order, Lugh the assassin, Dia the mage, his assistant Tarte, and Maha the intelligence expert begin their investigation of Marquess Collide. However, Dia is captured by Marquess Collide and put up for auction--

Episode credits

Guest stars Chie Nakamura, Ayaka Shimizu, Mitsuki Nakamura, Hiroya Egashira, Takahiro Sumi, Takaki Otomari, Takara Inoue, Yurika Moriyama

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

Episode 2

Deal of Reincarnation

Oct 13, 202124m7.2 / 10

The world's finest Assassin accepts the Goddess' request to assassinate the Hero. After defeating the Demon Lord and saving the world, the Hero will then use his power to destroy the world. The Goddess wants the Assassin to be reincarnated in another world and assassinate the Hero in order to save it. After being betrayed and killed by his client in his previous life, the Assassin accepts her offer in order to relive his life in a new world, but--

Episode credits

Guest stars Makoto Koichi

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

Episode 3

Magic of Bonds

Oct 20, 202124m7.5 / 10

Lugh's magic teacher is a pretty girl named Dia. Being a few years older than Lugh, Dia treats him like a younger brother and sneaks into his bed every night in order to sleep next to him. Because he needs her to teach him magic, Lugh can't complain, but gradually he and Dia grow closer--

Episode credits

Directed by Yusuke SekineGuest stars Harumi Sakurai, Makoto Koichi

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

Episode 4

Plan of Goddess

Oct 27, 202124m7.6 / 10

The goddess is formulating a plan to stop the Hero's rampage. After defeating the Demon Lord and saving the world, next he will use his power to destroy the world. The goddess has decided to summon the souls of professionals from other worlds and reincarnate them. She summons the soul of the world's finest special forces soldier who excels in combat and asks him to defeat the Hero, but--

Episode credits

Directed by Motomasa MaedaGuest stars Makoto Koichi, Emiko Takeuchi, Yuuka Nanba, Hiroki Yasumoto

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

Episode 5

Qualifications of Assassins

Nov 3, 202124m7.6 / 10

Officially a family of renowned doctors and assassins behind the scenes, the house of Tuatha Dé is the right hand of the kingdom. Trusted to become his father's heir, Lugh assists his father with his mission. However, there are those who are displeased by Lugh's success. Lugh defends his status in a challenge against them--

Episode credits

Directed by Masahiro HosodaGuest stars Daisuke Masuoka, Masashi Nogawa, Yoshihito Sasaki, Yukiko Aruga, Shinya Takahashi, Tomokazu Sugita

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

Episode 6

Residence of Girls

Nov 10, 202124m7.9 / 10

A group of girls were toughing it out despite their impoverished circumstances. Though they had nowhere to live, they ran a business and enjoyed their lives together. However, an orphanage captures the girls and forces them to move into the facility. Motivated by subsidies, the orphanage puts the girls to work and even has them work as ladies of the night--

Episode credits

Guest stars Itaru Yamamoto, Hiroki Matsukawa, Ryu Morimiya, Junji Tachibana, Chiyuki Miura, Akane Matsunaga, Saima Nakano, Kenji Akabane

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

Episode 7

Life of Falsehoods

Nov 17, 202124m7.5 / 10

Lugh heads to the neighboring kingdom of Swoigel. Once a month, he travels to the Viekone region in order to visit Dia. During his visit, together Lugh and Dia develop new spells. Meanwhile, left back home by themselves, Tarte and Maha hold a tea party together. While Lugh is gone, they have a fun time preparing a special meal together, but--

Episode credits

Guest stars Naoki Tamanoi, Rikako Aikawa, Yuya Hozumi, Hiroya Egashira, Chiyuki Miura, Akane Matsunaga, Saima Nakano, Kenji Akabane

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

Episode 8

Rites of Choice

Nov 24, 202124m7.4 / 10

With the success of his cosmetics brand Orna, by acquiring financial power and the Balor Trading Company's information network, Lugh has gained even greater strength as an assassin. However, since being reincarnated in this world, Lugh still has not completed a proper assassination. Then, Lugh's father Cian tells him that he doesn't have to become an assassin--

Episode credits

Guest stars Yoshihito Sasaki, Yukiko Aruga, Chiyuki Miura, Akane Matsunaga, Saima Nakano, Seiya Yamanaka, Kenji Akabane, Shinya Takahashi

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

Episode 9

Compensation of Assassination

Dec 1, 202124m7.6 / 10

Lugh receives a request for assassination. He takes Talt with him and goes to a commercial city, Pisaal. He decides to gather information beforehand to justify whether the target needs to be assassinated. Once there, Lugh saw the suffering of the people that was caused by his target. It's a tragic sight as a young child is forced to sell drugs while her mother was emaciated and was also addicted to it. Thus, Lugh formulates an assassination plan based on the information that Maha had collected. He was successful in killing for the first time in this life, though he soon felt the weight of his action and became emotional after witnessing the wife of the target grieving.

Episode credits

Directed by Yusuke SekineGuest stars Kenji Akabane, Mika Kanda, Tokuyoshi Kawashima, Mariko Kouda, Tetsurou Miyata, Genta Nakamura, Keisuke Hamaoka, Arisa Kinami

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Episode 10

First of Dates

Dec 8, 202124m7.8 / 10

In front of Lugh and Talt who've just finished a magical training camp in a deserted island, Maha appeared with information. It's about Swoigel kingdom being engulfed in a civil war. Lugh heads toward Dia, but Viecone territory seemed peaceful as always. Lugh was still worried, but Dia ignored him and suggested to go on a date instead.

Episode credits

Directed by Motomasa MaedaGuest stars Chiko Mizumori, Miho Hayashi, Mika Kanda, Risa Hayamizu

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

Episode 11

Choice of Betrayal

Dec 15, 202124m7.4 / 10

Lugh got a assasination request for Dia. And the principal is Count Viecone, who is Dia's father and Cian's old friend. Cian expects Lugh can finish the assasination. But if he refuses it, Cian will do it with his own hands.

Episode credits

Directed by Masahiro HosodaGuest stars Yui Ninomiya, Shinya Takahashi, Yoshihito Sasaki, Kouichi Souma, Kosuke Kobayashi, Tomokazu Sugita, Subaru Kimura, Junichi Suwabe

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

Episode 12

Battle of Assassin

Dec 22, 202124m7.8 / 10finale

Lugh and Dia's father come up with a plan to fake Dia's death and safely sneak her into to the Tuatha Dé region. Unfortunately, the arrival of Setanta MacNess thwarts the plan before they can enact it. As Setanta is the wielder of Gae Bolg, Lugh knows that he will not survive a direct confrontation with him, so he fires a magnetically propelled tungsten projectile into the atmosphere and stalls Setanta long enough for it to obliterate him. Afterwards, the Tuatha Dé family adopts Dia under the guise of being Lugh's younger sister, completing the mission. Sometime later, Lugh receives word that the Hero, Lord Epona Rhiannon, has arrived in the Alvan Kingdom.

Episode credits

Guest stars Daisuke Hirakawa, Kisho Taniyama, Risa Hayamizu, Shoumaru Zouza, Chihaya Terasaki, Yusuke Tomioka, Akihiro Mine

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Episode information updated Jul 24, 2026

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

Watch trailerOfficial Trailer 2

Cast

Reina UedaDia (voice)

Yuuki TakadaTarte (voice)

Shino ShimojiMaha (voice)

Toshiyuki MorikawaCian (voice)

Chiaki TakahashiEthilu (voice)

Yukari Tamurathe Goddess (voice)

Junpei Moritathe Assassin (voice)

Kenji AkabaneLugh (voice)

Credits

Written by: Rui Tsukiyo

Production details

Status: Returning Series
Series type: Scripted
Episodes: 12
Original language: Japanese
Original title: 世界最高の暗殺者、異世界貴族に転生する

Networks & production

AT-XJapan
SILVER LINK.Japan
Studio PaletteJapan
KADOKAWAJapan
Bandai Namco ArtsJapan
CrunchyrollJapan

Themes

animearistocratassassinassassinationbased on light novelchild kidnappingharemhuman trafficking

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