Kenshō Ono (小野 賢章, Ono Kenshō, born October 5, 1989) is a Japanese actor, voice actor, singer, and narrator. He is represented by the agency Animo Produce. Ono is best known for voicing Tetsuya Kuroko in Kuroko’s Basketball, Giorno Giovanna in JoJo’s Bizarre Adventure: Golden Wind, Riku Nanase in Idolish7, Ryunosuke Akutagawa in Bungo Stray Dogs, and the Japanese dub voice of Harry Potter in the Harry Potter film series. He began his career as a child actor at age four and has since become one of Japan’s most recognized voice actors, winning the 16th Seiyu Awards in the Best Lead Actor category in 2022.
Quick Facts Table
Table of Contents
Early Life and Family
Childhood
Kenshō Ono was born on October 5, 1989, in Fukuoka Prefecture, Japan. He made his debut as a child actor at the age of four. The impetus came after he watched Ninja Sentai Kakuranger and expressed a desire to “go to this world”. His mother, taking a practical approach, took him to a children’s theater group.
In the fourth grade of elementary school, Ono successfully passed the audition for the role of Young Simba in the Shiki Theatre Company’s musical production of The Lion King, performing in the show from fifth grade through the first year of junior high school.
Parents and Family Background
Ono’s father is from Ehime Prefecture’s Iyo City, and Ono frequently visited the area during his childhood. His name was inspired by the designer Abe Kenshō. Ono has an older brother and a younger sister. His parents are graduates of university. No publicly verified information is available regarding his parents’ names or professions.
Education
Ono attended Setagaya Municipal Matsuzawa Junior High School. He later attended Tokyo Metropolitan Shinjuku High School. In junior high school, influenced by Takehiko Inoue’s manga Slam Dunk, he joined the basketball club. In high school, he was a member of the light music club, serving as a guitarist and vocalist.
Ono did not attend university. His parents encouraged him to pursue higher education, but his career in the entertainment industry from childhood made it difficult to prioritize academics.
Age and Birthday
Kenshō Ono was born on October 5, 1989. His zodiac sign is Libra. He turns 37 in October 2026.
| Detail | Information |
|---|---|
| Date of Birth | October 5, 1989 |
| Age (2026) | 36-37 years |
| Zodiac Sign | Libra |
| Blood Type | A |
Height, Weight and Physical Appearance
| Physical Attribute | Information |
|---|---|
| Height | 170 cm (5 ft 7 in) |
| Weight | 52 kg (approx. 115 lbs) |
| Blood Type | A |
| Eye Color | No publicly verified information available |
| Hair Color | No publicly verified information available |
Career Journey
Early Career (Child Actor Era)
Ono began his career as a child actor at age four. His early work included appearances in television dramas such as Shōnen H (at age 10), Himitsu no Hanazono, and Ie Naki Ko. He was affiliated with the theater company Gekidan Himawari’s Sunaoka Office.
At age 12, in 2001, while still in the sixth grade of elementary school, Ono was cast as the Japanese dub voice of Harry Potter in Harry Potter and the Philosopher’s Stone. This role marked his debut as a voice actor. He continued to voice Harry Potter for the entire film series, spanning ten years.
At the time, Ono had not read the original Harry Potter books. His mother, a devoted fan of the series, was reportedly happier about the role than he was.
Breakthrough
In 2012, Ono was cast as the protagonist Tetsuya Kuroko in the television anime adaptation of Kuroko’s Basketball. This role proved to be a turning point in his career.
In 2014, Ono expanded his portfolio with two major anime roles: Yuya Sakaki in Yu-Gi-Oh! Arc-V and Slaine Troyard in Aldnoah.Zero. That same year, he launched his solo music career with the single “Fantastic Tune,” which served as an ending theme for Kuroko’s Basketball.
Major Achievements
Ono has voiced numerous iconic anime characters across multiple genres:
- Tetsuya Kuroko – Kuroko’s Basketball (2012–2015)
- Slaine Troyard – Aldnoah.Zero (2014–2015)
- Yuya Sakaki – Yu-Gi-Oh! Arc-V (2014–2017)
- Hakuryu Ren – Magi: The Labyrinth of Magic (2013–2014)
- Mikaela Hyakuya – Seraph of the End (2015)
- Ryunosuke Akutagawa – Bungo Stray Dogs (2016–present)
- Riku Nanase – Idolish7 (2018–present)
- Giorno Giovanna – JoJo’s Bizarre Adventure: Golden Wind (2018–2019)
- Hathaway Noa – Mobile Suit Gundam: Hathaway’s Flash (2021–present)
- Floch Forster – Attack on Titan (2018–2023)
- Yuri Briar – SPY×FAMILY (2023)
Ono also voiced Miles Morales in the Japanese dubs of Spider-Man: Into the Spider-Verse and Spider-Man: Across the Spider-Verse.
On March 5, 2022, Ono won the Best Lead Actor award at the 16th Seiyu Awards for his performance as Hathaway Noa in Mobile Suit Gundam: Hathaway’s Flash.
In 2023, he released his first digital photo book, Futarikiri no Kyūjitsu.
Recent Career Updates (2026)
According to his agency profile, Ono’s 2026 anime voice roles include:
- Yuru – Yomi no Tsugai (April 2026)
- Mitsuo Aoki – Nippon Sangoku (April 2026)
- Yuta Kadowaki – Otonari no Tenshi-sama ni Itsunomanika Dame Ningen ni Sareteita Ken 2 (April 2026)
- Raichi Todoroki – Diamond no Ace actII -Second Season- (April 2026)
- Jade – Saikyō no Shokugyō wa Yūsha Demo Kenja Demo Naku Kanteishi (Kari) Rashii Desu yo? (April 2026)
- Yūichi Kyōkawa – Dandelion (Netflix, April 2026)
- Ura Fūki Iin – Ponkotsu Fūki Iin to Skirt-take ga Futekisetsu na JK no Hanashi (April 2026)
- Takasei Matsumura – Ganbare! Nakamura-kun!! (April 2026)
- Shū Narita – Uchi no Otōto-domo ga Sumimasen (July 2026)
- Sasuke – Gaikotsu Kishi-sama, Tadaima Isekai e Odekake-chū II (July 2026)
- Cedric Ashberry – Tefuda ga Ōme no Victoria (July 2026)
He also continues to perform in the stage play Harry Potter and the Cursed Child.
Career Timeline
Awards and Achievements
| Year | Award | Category | Work | Result |
|---|---|---|---|---|
| 2022 | 16th Seiyu Awards | Best Lead Actor | Mobile Suit Gundam: Hathaway’s Flash (Hathaway Noa) | Won |
No other publicly verified awards have been documented for Kenshō Ono.
Relationship Status
Marriage to Kana Hanazawa
Kenshō Ono married fellow voice actress Kana Hanazawa on July 8, 2020. The couple announced their marriage through their respective social media accounts.
Their relationship had first been reported by Weekly Bunshun in February 2017, which published photographs of the two entering an apartment together in Tokyo’s Minato Ward. Ono subsequently confirmed the relationship on his personal blog on February 22, 2017.
Divorce
According to Wikipedia sources, Ono and Hanazawa divorced in 2025. No publicly verified information is available regarding the circumstances of the divorce.
Children
No publicly verified information is available regarding whether Kenshō Ono has any children.
Net Worth
No publicly verified information is available regarding Kenshō Ono’s net worth. His income sources include voice acting work in anime, video games, and dubbing; acting in stage productions and films; music sales and performances; and narration work.
Social Media Presence
| Platform | Information |
|---|---|
| X (formerly Twitter) | @ono_kensho |
| @ono_kensho (linked from X profile) | |
| YouTube | Channel launched October 23, 2025 |
| Official Website | animoproduce.co.jp/artists/onokensho/[reference:125] |
Lesser Known Facts
- Name origin: Kenshō Ono’s name was inspired by the designer Abe Kenshō.
- Harry Potter connection: Ono voiced Harry Potter in the Japanese dub for the entire film series, spanning ten years from age 12. He had not read the original books before taking the role.
- Family pets: His family keeps a cat named Matsuri, a name chosen by voice actor Hiroaki Haneda.
- Cooking at home: According to reports, Hanazawa did most of the cooking during their marriage, and Ono would stop playing games immediately when called for meals.
- Basketball background: Ono joined his junior high school basketball club after being inspired by the manga Slam Dunk.
- High school band: In high school, he was in the light music club as a guitarist and vocalist.
- Special skills: Ono’s listed special skills include gymnastics, basketball, Osaka dialect, Hakata dialect, and dance.
- Hobbies: His hobbies include playing guitar and video games.
- Licenses: He holds a standard Japanese driver’s license.
- Furusato ambassador: On May 5, 2015, he was appointed as the first “Masumasu Iyo City Furusato Tourism Ambassador” for Ehime Prefecture’s Iyo City.
Frequently Asked Questions
Q1: Who is Kenshō Ono?
A: Kenshō Ono is a Japanese voice actor, actor, singer, and narrator born on October 5, 1989, in Fukuoka Prefecture, Japan.
Q2: How old is Kenshō Ono?
A: He was born on October 5, 1989, making him 36-37 years old in 2026.
Q3: What is Kenshō Ono’s height?
A: He is 170 cm (5 ft 7 in) tall.
Q4: What are Kenshō Ono’s most famous roles?
A: He is best known for Tetsuya Kuroko (Kuroko’s Basketball), Giorno Giovanna (JoJo’s Bizarre Adventure: Golden Wind), Riku Nanase (Idolish7), and the Japanese dub of Harry Potter.
Q5: Who was Kenshō Ono married to?
A: He was married to voice actress Kana Hanazawa from 2020 to 2025.
Q6: Did Kenshō Ono win any awards?
A: Yes, he won the Best Lead Actor award at the 16th Seiyu Awards in 2022 for his role as Hathaway Noa in Mobile Suit Gundam: Hathaway’s Flash.
Q7: What is Kenshō Ono’s net worth?
A: No publicly verified information is available regarding Kenshō Ono’s net worth.
Q8: What agency does Kenshō Ono belong to?
A: He is represented by Animo Produce.
Q9: When did Kenshō Ono debut as a voice actor?
A: He debuted in 2001 as the Japanese dub voice of Harry Potter.
Q10: Does Kenshō Ono have any children?
A: No publicly verified information is available.
Conclusion
Kenshō Ono has established himself as one of Japan’s most versatile and accomplished voice actors. From his debut as a child actor at age four to his breakthrough role as Tetsuya Kuroko in Kuroko’s Basketball, and from voicing the Japanese Harry Potter for a decade to winning the 16th Seiyu Awards Best Lead Actor award, Ono’s career spans over three decades of consistent work across anime, film, stage, and music.
His ability to portray a wide range of characters-from the quiet and unassuming Kuroko to the ambitious Giorno Giovanna, from the conflicted Slaine Troyard to the heroic Hathaway Noa-demonstrates his depth as a performer. Ono’s marriage to and subsequent divorce from fellow voice actress Kana Hanazawa attracted significant public attention, but his professional output remains the primary focus of his public identity. As of 2026, Ono continues to be active in numerous anime productions, stage performances, and voice acting projects.
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