Ayumu Seko

Ayumu Seko (瀬古 歩夢, Seko Ayumu; born 7 June 2000) is a Japanese professional footballer who plays for Ligue 1 club Le Havre and the Japan national team.^[2]

Ayumu Seko
瀬古 歩夢

Personal information
Full name	Ayumu Seko[1]
Date of birth	(2000-06-07) 7 June 2000 (age 25)
Place of birth	Taishō-ku, Osaka, Japan
Height	1.85 m (6 ft 1 in)
Position(s)	Centre back
Team information
Current team	Le Havre
Number	5
Youth career
2007–2009	Nakaizuo JSC
2010–2018	Cerezo Osaka
Senior career*
Years	Team	Apps	(Gls)
2016–2019	Cerezo Osaka U-23	35	(1)
2016–2022	Cerezo Osaka	67	(2)
2022–2025	Grasshopper	117	(1)
2025–	Le Havre	0	(0)
International career‡
2015	Japan U15	4	(0)
2017	Japan U17	4	(0)
2018	Japan U19	4	(0)
2019	Japan U20	5	(0)
2019–2022	Japan U22	1	(0)
2023–	Japan	7	(0)
Medal record Cerezo Osaka Winner J.League Cup 2017 Winner Emperor's Cup 2017 Representing  Japan AFC U-19 Championship 2018
* Club domestic league appearances and goals as of 19 July 2025 ‡ National team caps and goals as of 10 June 2025

Club career

Seko joined Cerezo Osaka in 2016. On 13 November, he debuted for their U-23 squad in J3 League (v Kataller Toyama).^[3][4] 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.^[5] On 17 June 2025, it was announced that he would depart Grasshoppers that summer, having made 117 league appearances for the Swiss record champions.^[6]

On 23 July 2025, he signed with Ligue 1 side Le Havre.^[7]

International career

Seko was called up to give his debut for the Japan national team in a friendly against Uzbekistan on 21 January 2022.^[8] However, the match was cancelled by the JFA due to COVID restrictions.^[9]

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.^[10]

Career statistics

Club

As of 31 May 2025^[11]

Appearances and goals by club, season and competition

Club	Season	League			National cup[a]		League cup[b]		Continental		Other		Total
		Division	Apps	Goals	Apps	Goals	Apps	Goals	Apps	Goals	Apps	Goals	Apps	Goals
Cerezo Osaka U-23	2016	J3 League	1	0	—		—		—		—		1	0
	2017		11	0	—		—		—		—		11	0
	2018		16	1	—		—		—		—		16	1
	2019		7	0	—		—		—		—		7	0
	Total		35	1	—		—		—		—		35	1
Cerezo Osaka	2017	J1 League	0	0	3	0	0	0	—		—		3	0
	2019		13	1	3	0	6	0	—		—		22	1
	2020		27	1	0	0	4	0	—		—		31	1
	2021		27	0	3	0	3	0	5[c]	0	—		38	0
	Total		67	2	9	0	13	0	5	0	—		94	2
Grasshopper	2021–22	Swiss Super League	13	0	—		—		—		—		13	0
	2022–23		31	0	3	2	—		—		—		34	2
	2023–24		36	1	1	0	—		—		2[d]	0	39	1
	2024–25		37	0	1	0	—		—		2[d]	1	40	1
	Total		117	1	5	2	—		—		4	1	126	4
Le Havre	2025–26	Ligue 1	0	0	0	0	—		—		—		0	0
Career total			219	4	14	2	13	0	5	0	4	1	255	7

1. Includes Emperor's Cup, Swiss Cup
2. Includes J.League Cup
3. Appearances in AFC Champions League
4. Appearances in Swiss Super League relegation play-off

Honours

Individual

• J.League Rookie of the Year: 2020^[12]
• J.League Cup New Hero Award: 2020^[13]