| Kaisei Ishii 石井 快征 | |
| Fullname: | Kaisei Ishii |
| Birth Date: | 2 April 2000 |
| Birth Place: | Fukuoka, Japan |
| Position: | Forward |
| Currentclub: | FC Ryukyu |
| Clubnumber: | 11 |
| Youthyears1: | 2016–2018 |
| Youthclubs1: | Sagan Tosu |
| Clubs1: | Sagan Tosu |
| Years1: | 2018–2022 |
| Caps1: | 24 |
| Goals1: | 3 |
| Clubs2: | → Ehime FC (loan) |
| Years2: | 2021 |
| Caps2: | 12 |
| Goals2: | 1 |
| Clubs3: | → Yokohama FC (loan) |
| Years3: | 2022 |
| Caps3: | 0 |
| Goals3: | 0 |
| Years4: | 2023 |
| Caps4: | 0 |
| Goals4: | 0 |
| Years5: | 2024– |
| Clubs5: | → FC Ryukyu |
| Caps5: | 0 |
| Goals5: | 0 |
| Club-Update: | 02:38, 26 December 2023 |
is a Japanese professional footballer who plays as a forward for FC Ryukyu.
Ishii was born in the Fukuoka Prefecture on April 2, 2000. He joined J1 League club Sagan Tosu from their youth team in 2018. He made his debut for Sagan on the 15 June 2019 against Urawa Red Diamonds.[1] He scored his first goal for Sagan against Cerezo Osaka, scoring in the 51st minute on the 26 July 2020.[2]
Kaisei made his debut for Ehime against Giravanz Kitakyushu on the 20th of June 2021.[3] He scored his first goal for the club on the 12 September 2021, scoring in the 62nd minute.[4]
Kaisei is yet to make an appearance for Yokohama.
Last update: 27 February 2019[5]
| Club performance | League | Cup | League Cup | Total | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Season | Club | League | Apps | Goals | Apps | Goals | Apps | Goals | Apps | Goals | |
| Japan | League | Emperor's Cup | League Cup | Total | |||||||
| 2018 | J1 League | 0 | 0 | 1 | 0 | 2 | 1 | 3 | 1 | ||
| 2019 | 1 | 0 | 2 | 0 | 1 | 0 | 4 | 0 | |||
| 2020 | 18 | 3 | – | 1 | 0 | 19 | 3 | ||||
| 2021 | 5 | 0 | 0 | 0 | 6 | 0 | 11 | 0 | |||
| 2021 | Ehime FC (loan) | J2 League | 12 | 1 | 0 | 0 | – | 12 | 1 | ||
| 2022 | Sagan Tosu | J1 League | 0 | 0 | 0 | 0 | 3 | 0 | 3 | 0 | |
| Career total | 36 | 4 | 3 | 0 | 13 | 1 | 52 | 5 | |||
Sagan Tosu
Yokohama FC