Ayumu Seko is a professional footballer from Japan who plays as a defender.
He currently plays for Ligue 1 club Le Havre and the Japan national team.
Seko debuted for Cerezo Osaka's U-23 squad in the J3 League in 2016.
Biography
Early Life and Career Beginnings
Ayumu Seko is a Japanese professional footballer known for his role as a defender. He began his career with Cerezo Osaka, joining the club in 2016. Seko made his debut for the U-23 squad in the J3 League on November 13, 2016, and later made his J1 League debut on December 7, 2019, in a match against Ōita, contributing to a 2–0 victory.
Professional Journey
In January 2022, Seko took a significant step in his career by signing a three-year contract with Grasshopper Club Zürich in the Swiss Super League. During his time there, he made 117 league appearances, showcasing his skills on an international stage. Following his tenure in Switzerland, Seko signed with Ligue 1 club Le Havre on July 23, 2025, marking another chapter in his professional journey.
International Career
Seko's international career with the Japan national team began with a call-up for a friendly against Uzbekistan on January 21, 2022, although the match was ultimately canceled due to COVID-19 restrictions. He made his long-awaited debut on March 24, 2023, in a friendly against Uruguay, where he played the full match in a 1–1 draw. His performances earned him a spot in the 26-man squad for the 2026 FIFA World Cup, highlighting his growing importance in the national setup.
Achievements
Seko's talent has not gone unnoticed, as he was awarded the J.League Rookie of the Year and the J.League Cup New Hero Award in 2020, recognizing his impact in Japanese football at a young age. His journey reflects a promising career ahead, both at the club and international levels.
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Gallery
Career & Clubs
Seko joined Cerezo Osaka in 2016. On 13 November, he debuted for their U-23 squad in J3 League (v Kataller Toyama). He gave his J1 League debut for the main squad on 7 December 2019, in 2–0 victory over Ōita. He signed a three-year contract with Swiss Super League team Grasshopper Club Zürich on 18 January 2022. On 17 June 2025, it was announced that he would depart Grasshoppers that summer, having made 117 league appearances for the Swiss record champions. On 23 July 2025, he signed for Ligue 1 side Le Havre.
Club
As of match played 19 September 2026
International
As of match played 26 September 2026
Seko was called up to give his debut for the Japan national team in a friendly against Uzbekistan on 21 January 2022. However, the match was cancelled by the JFA due to COVID restrictions. In March 2023, he was called up by Hajime Moriyasu for friendlies against Uruguay and Colombia. This time, he was able to make his debut, having played a full match against Uruguay on 24 March 2023, which ended in a 1–1 draw. On 15 May 2026, Seko was selected in the 26-man squad for the 2026 FIFA World Cup.
- Club
- Cerezo Osaka
- Club
- Le Havre AC
- Club
- Grasshopper Club Zürich
- National team
- Japan
- Club
- Japan men's national football team
Legacy
Individual
J.League Rookie of the Year: 2020 J.League Cup New Hero Award: 2020
Clubs
- Cerezo Osakacurrent
- Grasshopper Club Zürichcurrent
- Japan men's national football teamcurrent
- Le Havre ACcurrent
Played together with
- Aarón GalindoGrasshopper Club Zürich · 2007–2007
Abdelkrim MerryLe Havre AC · 1985–1986Abdoulaye DialloLe Havre AC · 2014–2015
- Ademar da Silva Braga JúniorCerezo Osaka · 1995–1995
- Adolphe HugGrasshopper Club Zürich · 1941–1942
Adriano Ferreira MartinsCerezo Osaka · 2010–2010
Ahmed Hassan MahgoubLe Havre AC · 2025–2025
Akeem AgbetuLe Havre AC · 2014- Aki ArimizuCerezo Osaka
Akihiro IenagaCerezo Osaka · 2010–2010- Akihiro NishimuraCerezo Osaka · 1981–1991
- Akihiro SakataCerezo Osaka · 2007–2009
Archive
Passport
Identifiers & aliases
Ayumu Seko is a Japanese professional footballer who plays for Ligue 1 club Le Havre and the Japan national team.
Opinions of fans — not verified facts.
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