# Koshi Mizukami

Koshi Mizukami (水上恒司, Mizukami Kōshi, born 12 May 1999) is a Japanese actor. Until August 2022 he worked under the stage name Kenshi Okada (岡田健史).

## Early life

Mizukami was born on 12 May 1999 in Higashi ward, Fukuoka Prefecture. He started playing baseball in the second grade of elementary school and mainly served as a catcher. He graduated from Soseikan High School. In addition, Riku Kawahara [ja] of the professional baseball team Hanshin Tigers was a junior in the baseball club, Mizukami was a catcher and Kawahara was a pitcher.

## Career

In the winter of his first year of junior high school, he was first scouted by the entertainment agency Spice Power (the male division of talent agency Sweet Power [ja]). After that, he was pursued by the agency for five years, but he kept turning down the offer as he was immersed in baseball and was aiming to play in Koshien.
In 2017, after departing from the baseball club when he was in his third year of high school, he was scouted by a teacher who was an adviser to the drama club, and played as a kamikaze member in a work called "Hair combing August" and participated in the prefectural high school drama competition. This work would win the highest award at the Kyushu block of the prefectural competition and was recommended for the national competition. However, this did not come to be due to the format of the high school drama competition, which is held within the year up to the block competition and the national competition, but Mizukami graduated from high school in that subsequent year, thus he was unable to compete for the national competition. Originally, he had planned to go to college and continue playing baseball, but after participating in the prefectural tournament, he began to desire becoming an actor. His parents, who were against his decision at first came around eventually because they were so pleased with his acting debut.
After auditioning for the TV drama "Meet Me After School" on TBS, which started broadcasting in October 2018, he was selected as the main character's partner, portrayed by Kasumi Arimura, and made his debut as an actor. For this work he received the Newcomer Award at the 28th TV Life Drama Grand Prize.
In July 2019, he starred in the special drama commemorating the 50th anniversary of the opening of Fukuoka Broadcasting Don't You Think Girls Who Talk in Hakata Dialect Are Cute? [ja].
In 2020 he made his film debut in the movie All About March [ja], he then appeared in his second television drama MIU404 [ja]
In December 2020, he won first place in the NEXT category of the popular voting project "National Treasure Class Handsome Ranking" in the second half of 2020 of the women's fashion magazine ViVi.
In 2021, he appeared in the NHK Taiga drama Reach Beyond the Blue Sky. On March 19 of the same year, he won the New Actor Award in the 44th Japan Academy Award for three works; All About March, The Legacy of Dr. Death: Black File, and Hope.
In May 2021, he filed a provisional injunction with the court to cancel the contract with his agency, Mizukami agreed to continue working with the same agency until the expiration of the contract at the end of March 2023, and not to renew the contract after expiration, and a settlement was reached.
On 31 August 2022, he announced that his contract with his agency had ended ahead of schedule and that he would continue his activities under his real name, Koshi Mizukami. In September, he formed a business alliance with the company HAKU.
On 14 February 2023, it was announced that he would play Aisuke Murayama in the NHK serial TV drama Boogie Woogie. In the same year, Mizukami starred alongside Haruka Fukuhara in the film Till We Meet Again on the Lily Hill, which was released on December 8, 2023. For his role as kamikaze pilot Akira Sakuma, he was nominated for the Best Actor Award at the 47th Japan Academy Film Prize. The film also became a huge hit, grossing over 4 billion yen.

## Filmography
### Film

| Year | Title | Role | Notes |
| 2020 | All About March | Ayumu | |
| 2020 | Hope | Tadashi Ishikawa | |
| 2020 | The Legacy of Dr. Death: Black File | Kei Sawada | |
| 2020 | The Untold Tale of the Three Kingdoms | Sun Quan | |
| 2021 | Caution, Hazardous Wife: The Movie | Juri Iwao | |
| 2021 | And So the Baton Is Passed | Kento Hayase | |
| 2022 | Lesson in Murder | Masaya Kakei | Lead role |
| 2023 | Out | Kaname Abe | |
| 2023 | Till We Meet Again on the Lily Hill | Akira Sakuma | Lead role |
| 2024 | After the Fever | Hayato | |
| 2024 | Hakkenden: Fiction and Reality | Inukai Genpachi | |
| 2024 | The Real You | Kishitani | |
| 2024 | The Voices at War | Asakura | |
| 2025 | Kowloon Generic Romance | Hajime Kudo | Lead role |
| 2025 | Dream Animals: The Movie | Elephant (voice) | |
| 2025 | Eat the Firebird | Yuji Kuki | Lead role |

### Television drama

| Year | Title | Role | Notes |
| 2018 | Meet Me After School | Akira Kuroiwa | |
| 2019 | Doctor-X: Surgeon Michiko Daimon season 6 | Kiyoaki Yokkaichi | Episode 4 |
| 2019 | Don't You Think Girls Who Talk in Hakata Dialect Are Cute? | Miyako Azuma | Lead role; single-episode drama |
| 2020 | True Horror Stories 2020 | Yōhei Ōno | Lead role; single-episode drama |
| 2020 | MIU404 | Yohito Kokonoe | |
| 2021 | Reach Beyond the Blue Sky | Odaka Heikurō | Taiga drama |
| 2021 | Date My Daughter! | Hikaru Irino | |
| 2023 | Cinderella of Midsummer | Sōsuke Hayakawa | |
| 2023 | Boogie Woogie | Aisuke Murayama | Asadora |
| 2024 | Golden Time: The Story of Kintaro Hattori | Kintarō Hattori (young adult) | |
| 2024 | Blue Moment | Yugo Sonobe | |

### Web series

| Year | Title | Role | Notes |
| 2019 | If You Follow Me, It's Over | Sotaro Nakamura | Lead role |
| 2020 | My Dear Nina | Atsushi Toyama | Lead role |
| 2021 | Another Story of the Tower of Sakura | Yuma Togashi | Lead role |

### Narration

| Year | Title |
| 2019 | Telementary "Telling Hiroshima-Nagasaki Peace Messenger" |
| 2020 | Serial meal TV essay “I want to eat with you” |
| 2022 | Heartnet TV "Who am I? Children born with AID" |

## Awards and nominations

Year presented, name of the award ceremony, category, nominee(s) of the award, and the result of the nomination :
| Year | Award ceremony | Category | Nominated work(s) | Result |
| 2018 | 28th TV Life Drama Grand Prize | Newcomer of the Year | Meet Me After School | Won |
| 2020 | 33rd Nikkan Sports Film Awards | Yūjirō Ishihara Newcomer Award | All About March, The Legacy of Dr. Death: Black File, and Hope | Won |
| 2021 | 44th Japan Academy Film Prize | New Actor Award | All About March, The Legacy of Dr. Death: Black File, and Hope | Won |
| 2024 | 47th Japan Academy Film Prize | Best Actor | Till We Meet Again on the Lily Hill | Nominated |
| 2025 | 49th Elan d'or Awards | Newcomer of the Year | Himself | Won |