Katsunori Okai

Acting

Katsunori Okai

Place of birth

Hyogo, Japan

Known for

Acting

Credits

43 titles

Katsunori Okai (岡井カツノリ, Okai Katsunori, October 8) is a Japanese voice actor from Hyogo Prefecture affiliated with Kenyu Office. His former stage name is 岡井克升 (same reading).

Known for

The Apothecary Diaries poster
8.7

Maomao lived a peaceful life with her apothecary father. Until one day, she's sold as a lowly servant to the emperor's palace. But she wasn't meant for a compliant life among royalty. So when imperial heirs fall ill, she decides to step in and find a cure! This catches the eye of Jinshi, a handsome palace official who promotes her. Now, she's making a name for herself solving medical mysteries!

The Apothecary Diaries

2023

JUJUTSU KAISEN poster
8.6

Yuji Itadori is a boy with tremendous physical strength, though he lives a completely ordinary high school life. One day, to save a classmate who has been attacked by curses, he eats the finger of Ryomen Sukuna, taking the curse into his own soul. From then on, he shares one body with Ryomen Sukuna. Guided by the most powerful of sorcerers, Satoru Gojo, Itadori is admitted to Tokyo Jujutsu High School, an organization that fights the curses... and thus begins the heroic tale of a boy who became a curse to exorcise a curse, a life from which he could never turn back.

JUJUTSU KAISEN

2020

Mushoku Tensei: Jobless Reincarnation poster
8.4

When a 34-year-old underachiever gets run over by a truck, his story doesn't end there. Reincarnated in a new world as an infant, Rudy will seize every opportunity to live the life he's always wanted. Armed with new friends, some freshly acquired magical abilities, and the courage to do the things he's always dreamed of, he's embarking on an epic adventure—with all of his past experience intact!

Mushoku Tensei: Jobless Reincarnation

2021

Frieren: Beyond Journey's End poster
8.8

After the party of heroes defeated the Demon King, they restored peace to the land and returned to lives of solitude. Generations pass, and the elven mage Frieren comes face to face with humanity's mortality. She takes on a new apprentice and promises to fulfill old friends' dying wishes. Can an elven mind make peace with the nature of life and death? Frieren embarks on her quest to find out.

Frieren: Beyond Journey's End

2023

SPY x FAMILY poster
8.5

A spy, an assassin and a telepath come together to pose as a family, each for their own reasons, while hiding their true identities from each other.

SPY x FAMILY

2022

My Hero Academia: Vigilantes poster
7.7

After a life-changing incident, timid college student Koichi Haimawari accepts an offer from revered vigilante Knuckleduster to train as his protégé.

My Hero Academia: Vigilantes

2025

Film credits

Series credits

The Apothecary Diaries poster
8.7

Maomao lived a peaceful life with her apothecary father. Until one day, she's sold as a lowly servant to the emperor's palace. But she wasn't meant for a compliant life among royalty. So when imperial heirs fall ill, she decides to step in and find a cure! This catches the eye of Jinshi, a handsome palace official who promotes her. Now, she's making a name for herself solving medical mysteries!

The Apothecary Diaries

2023

JUJUTSU KAISEN poster
8.6

Yuji Itadori is a boy with tremendous physical strength, though he lives a completely ordinary high school life. One day, to save a classmate who has been attacked by curses, he eats the finger of Ryomen Sukuna, taking the curse into his own soul. From then on, he shares one body with Ryomen Sukuna. Guided by the most powerful of sorcerers, Satoru Gojo, Itadori is admitted to Tokyo Jujutsu High School, an organization that fights the curses... and thus begins the heroic tale of a boy who became a curse to exorcise a curse, a life from which he could never turn back.

JUJUTSU KAISEN

2020

Mushoku Tensei: Jobless Reincarnation poster
8.4

When a 34-year-old underachiever gets run over by a truck, his story doesn't end there. Reincarnated in a new world as an infant, Rudy will seize every opportunity to live the life he's always wanted. Armed with new friends, some freshly acquired magical abilities, and the courage to do the things he's always dreamed of, he's embarking on an epic adventure—with all of his past experience intact!

Mushoku Tensei: Jobless Reincarnation

2021

Frieren: Beyond Journey's End poster
8.8

After the party of heroes defeated the Demon King, they restored peace to the land and returned to lives of solitude. Generations pass, and the elven mage Frieren comes face to face with humanity's mortality. She takes on a new apprentice and promises to fulfill old friends' dying wishes. Can an elven mind make peace with the nature of life and death? Frieren embarks on her quest to find out.

Frieren: Beyond Journey's End

2023

Frieren: Beyond Journey's End poster
8.8

After the party of heroes defeated the Demon King, they restored peace to the land and returned to lives of solitude. Generations pass, and the elven mage Frieren comes face to face with humanity's mortality. She takes on a new apprentice and promises to fulfill old friends' dying wishes. Can an elven mind make peace with the nature of life and death? Frieren embarks on her quest to find out.

Frieren: Beyond Journey's End

2023

SPY x FAMILY poster
8.5

A spy, an assassin and a telepath come together to pose as a family, each for their own reasons, while hiding their true identities from each other.

SPY x FAMILY

2022

SPY x FAMILY poster
8.5

A spy, an assassin and a telepath come together to pose as a family, each for their own reasons, while hiding their true identities from each other.

SPY x FAMILY

2022

SPY x FAMILY poster
8.5

A spy, an assassin and a telepath come together to pose as a family, each for their own reasons, while hiding their true identities from each other.

SPY x FAMILY

2022

SPY x FAMILY poster
8.5

A spy, an assassin and a telepath come together to pose as a family, each for their own reasons, while hiding their true identities from each other.

SPY x FAMILY

2022

SPY x FAMILY poster
8.5

A spy, an assassin and a telepath come together to pose as a family, each for their own reasons, while hiding their true identities from each other.

SPY x FAMILY

2022

SPY x FAMILY poster
8.5

A spy, an assassin and a telepath come together to pose as a family, each for their own reasons, while hiding their true identities from each other.

SPY x FAMILY

2022

SPY x FAMILY poster
8.5

A spy, an assassin and a telepath come together to pose as a family, each for their own reasons, while hiding their true identities from each other.

SPY x FAMILY

2022

SPY x FAMILY poster
8.5

A spy, an assassin and a telepath come together to pose as a family, each for their own reasons, while hiding their true identities from each other.

SPY x FAMILY

2022

SPY x FAMILY poster
8.5

A spy, an assassin and a telepath come together to pose as a family, each for their own reasons, while hiding their true identities from each other.

SPY x FAMILY

2022

SPY x FAMILY poster
8.5

A spy, an assassin and a telepath come together to pose as a family, each for their own reasons, while hiding their true identities from each other.

SPY x FAMILY

2022

SPY x FAMILY poster
8.5

A spy, an assassin and a telepath come together to pose as a family, each for their own reasons, while hiding their true identities from each other.

SPY x FAMILY

2022

SPY x FAMILY poster
8.5

A spy, an assassin and a telepath come together to pose as a family, each for their own reasons, while hiding their true identities from each other.

SPY x FAMILY

2022

SPY x FAMILY poster
8.5

A spy, an assassin and a telepath come together to pose as a family, each for their own reasons, while hiding their true identities from each other.

SPY x FAMILY

2022

SPY x FAMILY poster
8.5

A spy, an assassin and a telepath come together to pose as a family, each for their own reasons, while hiding their true identities from each other.

SPY x FAMILY

2022

SPY x FAMILY poster
8.5

A spy, an assassin and a telepath come together to pose as a family, each for their own reasons, while hiding their true identities from each other.

SPY x FAMILY

2022

My Hero Academia: Vigilantes poster
7.7

After a life-changing incident, timid college student Koichi Haimawari accepts an offer from revered vigilante Knuckleduster to train as his protégé.

My Hero Academia: Vigilantes

2025

The Ancient Magus' Bride poster
8.4

Hatori Chise has lived a life full of neglect and abuse, devoid of anything resembling love. Far from the warmth of family, she has had her share of troubles and pitfalls. Just when all hope seems lost, a fateful encounter awaits her. When a man with the head of a beast, wielding strange powers, obtains her through a slave auction, Chise's life will never be the same again. The man is a "magus,"a sorcerer of great power, who decides to free Chise from the bonds of captivity. The magus then makes a bold statement: Chise will become his apprentice--and his bride!

The Ancient Magus' Bride

2017

The Ancient Magus' Bride poster
8.4

Hatori Chise has lived a life full of neglect and abuse, devoid of anything resembling love. Far from the warmth of family, she has had her share of troubles and pitfalls. Just when all hope seems lost, a fateful encounter awaits her. When a man with the head of a beast, wielding strange powers, obtains her through a slave auction, Chise's life will never be the same again. The man is a "magus,"a sorcerer of great power, who decides to free Chise from the bonds of captivity. The magus then makes a bold statement: Chise will become his apprentice--and his bride!

The Ancient Magus' Bride

2017

Attack on Titan poster
8.7

100 years ago, the last remnants of humanity were forced to retreat behind the towering walls of a fortified city to escape the massive, man-eating Titans that roamed the land outside their fortress. Only the members of the Scouting Legion dared to stray beyond the safety of the walls – but even those brave warriors seldom returned alive. Those within the city clung to the illusion of a peaceful existence until the day that dream was shattered, and their slim chance at survival was reduced to one horrifying choice: kill – or be devoured!

Attack on Titan

2013

Blue Box poster
7.9

Taiki Inomata loves badminton, but he has a long way to go before he can reach nationals. When Taiki sees upperclassman Chinatsu Kano practicing her heart out on the girls’ basketball team, he falls for her hard. After an unexpected turn of events brings the two closer together, sports might not be the first thing on their minds anymore!

Blue Box

2024

Blue Box poster
7.9

Taiki Inomata loves badminton, but he has a long way to go before he can reach nationals. When Taiki sees upperclassman Chinatsu Kano practicing her heart out on the girls’ basketball team, he falls for her hard. After an unexpected turn of events brings the two closer together, sports might not be the first thing on their minds anymore!

Blue Box

2024

Rurouni Kenshin poster
8.3

Ten years have passed since the end of Bakumatsu, an era of war that saw the uprising of citizens against the Tokugawa shogunate. The revolutionaries wanted to create a time of peace, and a thriving country free from oppression. The new age of Meiji has come, but peace has not yet been achieved. Swords are banned but people are still murdered in the streets. Orphans of war veterans are left with nowhere to go, while the government seems content to just line their pockets with money.

Rurouni Kenshin

2023

The Eminence in Shadow poster
8.1

Shadowbrokers are those who go unnoticed, posing as unremarkable people, when in truth, they control everything from behind the scenes. Sid wants to be someone just like that more than anything, and something as insignificant as boring reality isn’t going to get in his way! He trains in secret every single night, preparing for his eventual rise to power—only to be denied his destiny by a run-of-the-mill (yet deadly) traffic accident. But when he wakes up in a another world and suddenly finds himself at the head of an actual secret organization doing battle with evil in the shadows, he’ll finally get a chance to act out all of his delusional fantasies!

The Eminence in Shadow

2022

The Eminence in Shadow poster
8.1

Shadowbrokers are those who go unnoticed, posing as unremarkable people, when in truth, they control everything from behind the scenes. Sid wants to be someone just like that more than anything, and something as insignificant as boring reality isn’t going to get in his way! He trains in secret every single night, preparing for his eventual rise to power—only to be denied his destiny by a run-of-the-mill (yet deadly) traffic accident. But when he wakes up in a another world and suddenly finds himself at the head of an actual secret organization doing battle with evil in the shadows, he’ll finally get a chance to act out all of his delusional fantasies!

The Eminence in Shadow

2022

The Eminence in Shadow poster
8.1

Shadowbrokers are those who go unnoticed, posing as unremarkable people, when in truth, they control everything from behind the scenes. Sid wants to be someone just like that more than anything, and something as insignificant as boring reality isn’t going to get in his way! He trains in secret every single night, preparing for his eventual rise to power—only to be denied his destiny by a run-of-the-mill (yet deadly) traffic accident. But when he wakes up in a another world and suddenly finds himself at the head of an actual secret organization doing battle with evil in the shadows, he’ll finally get a chance to act out all of his delusional fantasies!

The Eminence in Shadow

2022

The Eminence in Shadow poster
8.1

Shadowbrokers are those who go unnoticed, posing as unremarkable people, when in truth, they control everything from behind the scenes. Sid wants to be someone just like that more than anything, and something as insignificant as boring reality isn’t going to get in his way! He trains in secret every single night, preparing for his eventual rise to power—only to be denied his destiny by a run-of-the-mill (yet deadly) traffic accident. But when he wakes up in a another world and suddenly finds himself at the head of an actual secret organization doing battle with evil in the shadows, he’ll finally get a chance to act out all of his delusional fantasies!

The Eminence in Shadow

2022

Ascendance of a Bookworm poster
8.1

When a sickly young girl suddenly becomes obsessed with inventing new things, her family and friends are all puzzled. "What has gotten into Myne?" they wondered, never dreaming that the answer is not a "What" but a "Who": Urano Motosu, a book-loving apprentice librarian who died in an earthquake in Tokyo who somehow found herself in Myne's body! And since Myne's world is still in a medieval stage, where books can only be owned by the elite, the new Myne intends to do everything she can to bring her beloved books to the masses in the time she has left.

Ascendance of a Bookworm

2019

Ascendance of a Bookworm poster
8.1

When a sickly young girl suddenly becomes obsessed with inventing new things, her family and friends are all puzzled. "What has gotten into Myne?" they wondered, never dreaming that the answer is not a "What" but a "Who": Urano Motosu, a book-loving apprentice librarian who died in an earthquake in Tokyo who somehow found herself in Myne's body! And since Myne's world is still in a medieval stage, where books can only be owned by the elite, the new Myne intends to do everything she can to bring her beloved books to the masses in the time she has left.

Ascendance of a Bookworm

2019

Ascendance of a Bookworm poster
8.1

When a sickly young girl suddenly becomes obsessed with inventing new things, her family and friends are all puzzled. "What has gotten into Myne?" they wondered, never dreaming that the answer is not a "What" but a "Who": Urano Motosu, a book-loving apprentice librarian who died in an earthquake in Tokyo who somehow found herself in Myne's body! And since Myne's world is still in a medieval stage, where books can only be owned by the elite, the new Myne intends to do everything she can to bring her beloved books to the masses in the time she has left.

Ascendance of a Bookworm

2019

Ascendance of a Bookworm poster
8.1

When a sickly young girl suddenly becomes obsessed with inventing new things, her family and friends are all puzzled. "What has gotten into Myne?" they wondered, never dreaming that the answer is not a "What" but a "Who": Urano Motosu, a book-loving apprentice librarian who died in an earthquake in Tokyo who somehow found herself in Myne's body! And since Myne's world is still in a medieval stage, where books can only be owned by the elite, the new Myne intends to do everything she can to bring her beloved books to the masses in the time she has left.

Ascendance of a Bookworm

2019

Ascendance of a Bookworm poster
8.1

When a sickly young girl suddenly becomes obsessed with inventing new things, her family and friends are all puzzled. "What has gotten into Myne?" they wondered, never dreaming that the answer is not a "What" but a "Who": Urano Motosu, a book-loving apprentice librarian who died in an earthquake in Tokyo who somehow found herself in Myne's body! And since Myne's world is still in a medieval stage, where books can only be owned by the elite, the new Myne intends to do everything she can to bring her beloved books to the masses in the time she has left.

Ascendance of a Bookworm

2019

Ascendance of a Bookworm poster
8.1

When a sickly young girl suddenly becomes obsessed with inventing new things, her family and friends are all puzzled. "What has gotten into Myne?" they wondered, never dreaming that the answer is not a "What" but a "Who": Urano Motosu, a book-loving apprentice librarian who died in an earthquake in Tokyo who somehow found herself in Myne's body! And since Myne's world is still in a medieval stage, where books can only be owned by the elite, the new Myne intends to do everything she can to bring her beloved books to the masses in the time she has left.

Ascendance of a Bookworm

2019

Ascendance of a Bookworm poster
8.1

When a sickly young girl suddenly becomes obsessed with inventing new things, her family and friends are all puzzled. "What has gotten into Myne?" they wondered, never dreaming that the answer is not a "What" but a "Who": Urano Motosu, a book-loving apprentice librarian who died in an earthquake in Tokyo who somehow found herself in Myne's body! And since Myne's world is still in a medieval stage, where books can only be owned by the elite, the new Myne intends to do everything she can to bring her beloved books to the masses in the time she has left.

Ascendance of a Bookworm

2019

Ascendance of a Bookworm poster
8.1

When a sickly young girl suddenly becomes obsessed with inventing new things, her family and friends are all puzzled. "What has gotten into Myne?" they wondered, never dreaming that the answer is not a "What" but a "Who": Urano Motosu, a book-loving apprentice librarian who died in an earthquake in Tokyo who somehow found herself in Myne's body! And since Myne's world is still in a medieval stage, where books can only be owned by the elite, the new Myne intends to do everything she can to bring her beloved books to the masses in the time she has left.

Ascendance of a Bookworm

2019

Ascendance of a Bookworm poster
8.1

When a sickly young girl suddenly becomes obsessed with inventing new things, her family and friends are all puzzled. "What has gotten into Myne?" they wondered, never dreaming that the answer is not a "What" but a "Who": Urano Motosu, a book-loving apprentice librarian who died in an earthquake in Tokyo who somehow found herself in Myne's body! And since Myne's world is still in a medieval stage, where books can only be owned by the elite, the new Myne intends to do everything she can to bring her beloved books to the masses in the time she has left.

Ascendance of a Bookworm

2019