Le Havre ACSeko has not yet won major trophies at the club level but has been a consistent performer for both Cerezo Osaka and Le Havre. He has also represented Japan in international competitions, including the AFC Asian Cup.
Ayumu Seko is a Japanese centre-back who currently plays for Le Havre AC in Ligue 1. He began his professional career with Cerezo Osaka in the J1 League before moving to Europe. Seko has represented Japan at various youth levels and earned caps for the senior national team.
Seko is a composed and intelligent defender known for his strong positional awareness and ability to read the game. He excels in one-on-one situations and is comfortable playing out from the back, though his lack of top-end pace can be exposed against faster attackers. His leadership and aerial ability make him a reliable presence in central defense.
| Season | Comp | Apps | G | A | YC | RC | Min |
|---|---|---|---|---|---|---|---|
| 25/26 | International Friendlies | 7 | 0 | 0 | 0 | 0 | 461 |
| 25/26 | Coupe de France | 0 | 0 | 0 | 0 | 0 | 0 |
| 25/26 | Ligue 1 | 30 | 0 | 0 | 6 | 0 | 2625 |
| 24/25 | Swiss Cup | 1 | 0 | 0 | 0 | 0 | 90 |
| 24/25 | Super League | 37 | 0 | 1 | 6 | 0 | 3284 |
| 24/25 | Super League Barrage | 2 | 1 | 0 | 1 | 0 | 180 |
| 23/24 | World Cup qualification Asia | 4 | 0 | 0 | 1 | 0 | 315 |
| 23/24 | Swiss Cup | 1 | 0 | 0 | 0 | 0 | 90 |
| 23/24 | International Friendlies | 0 | 0 | 0 | 0 | 0 | 0 |
| 23/24 | Super League | 36 | 1 | 0 | 4 | 0 | 2902 |
| 23/24 | Super League Barrage | 2 | 0 | 0 | 0 | 0 | 180 |
| 22/23 | Swiss Cup | 3 | 2 | 0 | 0 | 1 | 174 |
| 22/23 | International Friendlies | 3 | 0 | 0 | 0 | 0 | 130 |
| 22/23 | Super League | 31 | 0 | 1 | 5 | 0 | 2727 |
| 21/22 | International Friendlies | 1 | 0 | 0 | 1 | 0 | 45 |
| 21/22 | Super League | 13 | 0 | 0 | 2 | 0 | 1096 |
| 2025 | East Asian Football Championship | 0 | 0 | 0 | 0 | 0 | 0 |
| 2023 | AFC Asian Cup | 0 | 0 | 0 | 0 | 0 | 0 |
| 2021 | Olympic Games | 0 | 0 | 0 | 0 | 0 | 0 |
| 2021 | Emperor's Cup | 3 | 0 | 0 | 0 | 0 | 270 |
| 2021 | J. League Cup | 3 | 0 | 0 | 0 | 0 | 270 |
| 2021 | J1 League | 27 | 0 | 1 | 3 | 0 | 2354 |
| 2021 | AFC Champions League (- 2024) | 5 | 0 | 0 | 1 | 0 | 333 |
| 2020 | J. League Cup | 4 | 0 | 0 | 0 | 0 | 270 |
| 2020 | J1 League | 27 | 1 | 0 | 3 | 0 | 2217 |
| 2019 | Emperor's Cup | 3 | 0 | 0 | 1 | 0 | 300 |
| 2019 | J. League Cup | 6 | 0 | 0 | 0 | 0 | 540 |
| 2019 | J3 League | 7 | 0 | 0 | 3 | 0 | 541 |
| 2019 | J1 League | 13 | 1 | 1 | 1 | 0 | 1085 |
| 2019 | U20 World Cup | 3 | 0 | 0 | 0 | 0 | 270 |
| 2018 | J3 League | 16 | 1 | 2 | 0 | 0 | 1282 |
| 2018 | J. Youth League | 0 | 0 | 0 | 0 | 0 | 0 |
| 2017 | Emperor's Cup | 0 | 0 | 0 | 0 | 0 | 0 |
| 2017 | J. League Cup | 3 | 0 | 0 | 1 | 0 | 35 |
| 2017 | J3 League | 11 | 0 | 0 | 1 | 0 | 880 |
| 2017 | J1 League | 0 | 0 | 0 | 0 | 0 | 0 |
| 2017 | Prince Takamado U18 Premier League West | 0 | 0 | 0 | 0 | 0 | 0 |
| 2016 | J3 League | 1 | 0 | 0 | 0 | 0 | 1 |
| 2016 | Prince Takamado U18 Premier League West | 0 | 0 | 0 | 0 | 0 | 0 |
| 20/21 | International Friendlies | 1 | 0 | 1 | 0 | 0 | 90 |
| 19/20 | International Friendlies | 1 | 0 | 1 | 0 | 0 | 90 |
| 18/19 | International Friendlies | 2 | 0 | 0 | 0 | 0 | 122 |
| 17/18 | International Friendlies | 0 | 0 | 0 | 0 | 0 | 0 |
| 17/18 | AFC U19 Championship 2018 | 4 | 0 | 0 | 2 | 0 | 271 |
| 16/17 | International Friendlies | 4 | 0 | 0 | 0 | 0 | 280 |
| 15/16 | International Friendlies | 4 | 0 | 0 | 1 | 0 | 350 |
| Date | Opponent | H/A | Result | Competition | Min | G | A | YC |
|---|---|---|---|---|---|---|---|---|
| 2026-05-31 | Iceland | 🏠 | 1:0 | International Friendlies | 45 | 0 | 0 | 0 |
| 2026-03-31 | Japan | ✈ | 0:1 | International Friendlies | 24 | 0 | 0 | 0 |
| 2026-03-28 | Japan | ✈ | 0:1 | International Friendlies | 77 | 0 | 0 | 0 |
| 2025-11-18 | Bolivia | 🏠 | 3:0 | International Friendlies | 90 | 0 | 0 | 0 |
| 2025-11-14 | Ghana | 🏠 | 2:0 | International Friendlies | - | 0 | 0 | 0 |
| 2025-10-14 | Brazil | 🏠 | 3:2 | International Friendlies | - | 0 | 0 | 0 |
| 2025-10-10 | Paraguay | 🏠 | 2:2 | International Friendlies | 90 | 0 | 0 | 0 |
| 2025-09-09 | Japan | ✈ | 2:0 | International Friendlies | 45 | 0 | 0 | 0 |
| 2025-09-07 | Japan | ✈ | 0:0 | International Friendlies | 90 | 0 | 0 | 0 |
| 2025-07-15 | Japan | ✈ | 0:1 | East Asian Football Championship | - | 0 | 0 | 0 |
| 2025-07-12 | Japan | - | 0:0 | East Asian Football Championship | - | 0 | 0 | 0 |
| 2025-07-08 | Japan | - | 1:1 | East Asian Football Championship | - | 0 | 0 | 0 |
| 2025-06-10 | Indonesia | 🏠 | 6:0 | World Cup qualification Asia | 90 | 0 | 0 | 0 |
| 2025-06-05 | Japan | ✈ | 1:0 | World Cup qualification Asia | 45 | 0 | 0 | 0 |
| 2025-03-25 | Saudi Arabia | 🏠 | 0:0 | World Cup qualification Asia | - | 0 | 0 | 0 |
| 2025-03-20 | Bahrain | 🏠 | 2:0 | World Cup qualification Asia | 90 | 0 | 0 | 0 |
| 2024-11-19 | Japan | ✈ | 1:3 | World Cup qualification Asia | 90 | 0 | 0 | 1 |
| 2024-11-15 | Japan | ✈ | 0:4 | World Cup qualification Asia | - | 0 | 0 | 0 |
| 2024-10-15 | Australia | 🏠 | 1:1 | World Cup qualification Asia | - | 0 | 0 | 0 |
| 2024-10-10 | Japan | ✈ | 0:2 | World Cup qualification Asia | - | 0 | 0 | 0 |
| 2024-09-10 | Japan | ✈ | 0:5 | World Cup qualification Asia | - | 0 | 0 | 0 |
| 2024-09-05 | China | 🏠 | 7:0 | World Cup qualification Asia | - | 0 | 0 | 0 |
| 2024-06-11 | Syria | 🏠 | 5:0 | World Cup qualification Asia | - | 0 | 0 | 0 |
| 2024-06-06 | Japan | ✈ | 0:5 | World Cup qualification Asia | - | 0 | 0 | 0 |
| 2024-03-26 | Japan | ✈ | 0:3 | World Cup qualification Asia | - | 0 | 0 | 0 |
| 2024-03-21 | North Korea | 🏠 | 1:0 | World Cup qualification Asia | - | 0 | 0 | 0 |
| 2024-02-03 | Japan | ✈ | 2:1 | AFC Asian Cup | - | 0 | 0 | 0 |
| 2024-01-31 | Japan | ✈ | 1:3 | AFC Asian Cup | - | 0 | 0 | 0 |
| 2024-01-24 | Japan | ✈ | 1:3 | AFC Asian Cup | - | 0 | 0 | 0 |
| 2024-01-19 | Japan | ✈ | 2:1 | AFC Asian Cup | - | 0 | 0 | 0 |
| 2024-01-14 | Japan | ✈ | 2:4 | AFC Asian Cup | - | 0 | 0 | 0 |
| 2024-01-01 | Thailand | 🏠 | 5:0 | International Friendlies | - | 0 | 0 | 0 |
| 2023-11-21 | Japan | ✈ | 0:5 | World Cup qualification Asia | - | 0 | 0 | 0 |
| 2023-11-16 | Myanmar | 🏠 | 5:0 | World Cup qualification Asia | - | 0 | 0 | 0 |
| 2023-10-17 | Tunisia | 🏠 | 2:0 | International Friendlies | - | 0 | 0 | 0 |
| 2023-10-13 | Canada | 🏠 | 4:1 | International Friendlies | - | 0 | 0 | 0 |
| 2023-09-12 | Japan | ✈ | 2:4 | International Friendlies | - | 0 | 0 | 0 |
| 2023-09-09 | Japan | ✈ | 1:4 | International Friendlies | - | 0 | 0 | 0 |
| 2023-06-20 | Peru | 🏠 | 4:1 | International Friendlies | 9 | 0 | 0 | 0 |
| 2023-06-15 | El Salvador | 🏠 | 6:0 | International Friendlies | - | 0 | 0 | 0 |
| 2023-03-28 | Colombia | 🏠 | 1:2 | International Friendlies | 31 | 0 | 0 | 0 |
| 2023-03-24 | Uruguay | 🏠 | 1:1 | International Friendlies | 90 | 0 | 0 | 0 |