Iwasaki started with junior sides Kaneshiro JFC and JFA Academy Fukushima, before enrolling at the Hikone City Chuo Junior High School and later, Kyoto Tachibana High School.[2]
Club career
Kyoto Sanga
In August 2016, it was announced that Iwasaki would sign for Kyoto Sanga.[3] He made an assist on his debut against Montedio Yamagata.[4] Iwasaki scored his first league goal against Oita Trinita on 29 April 2017, scoring in the 70th minute.[5]
Hokkaido Consadole Sapporo
Iwasaki made his league debut against Nagoya Grampus on 30 March 2019.[6]
Loan to Shonan Bellmare
On 30 December 2019, Iwasaki was announced at Shonan Bellmare.[7] He made his league debut against Urawa Red Diamonds on 21 February 2020.[8]
Loan to JEF United Chiba
Iwasaki was announced at JEF United Chiba.[9] He made his league debut against Ventforet Kofu on 28 February 2021.[10]
Loan to Sagan Tosu
On 12 August 2021, Iwasaki was announced at Sagan Tosu.[11] He made his league debut against Urawa Red Diamonds on 14 August 2021.[12] Iwasaki scored his first league goal against Kawasaki Frontale on 7 November 2021, scoring in the 3rd minute.[13]
Sagan Tosu
On 14 December 2022, Iwasaki was announced at Sagan Tosu.[14] He made his league debut against Shonan Bellmare on 18 February 2023.[15]
Avispa Fukuoka
On 29 December 2023, Iwasaki was announced at Avispa Fukuoka.[16] He made his league debut against Hokkaido Consadole Sapporo on 24 February 2024.[17] On 25 May 2024, Iwasaki achieved his 200th J League appearance after playing against Albirex Niigata.[18]