Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 08/2026 |  | Kusini Yengi | FW |  | Aberdeen FC | Aberdeen |
| 08/2026 |  | Minato Hara | MF |  | Sanfrecce Hiroshima U18 | U18 |
| 07/2026 | | Takumu Kawamura | MF |  | RB Salzburg | RB Salzburg |
| 07/2026 |  | Sébastien Haller | FW |  | FC Utrecht | FC Utrecht |
| 07/2026 | | Leedo Morii | DF | | Sanfrecce Hiroshima U18 | U18 |
| 07/2026 | | Takuma Asano | FW |  | RCD Mallorca | Mallorca |
| 07/2026 | | Narumi Takahashi | FW | | Sanfrecce Hiroshima U18 | U18 |
| 07/2026 | | Naoto Kono | GK-CO | |||
| 02/2026 | | Hikaru Ogawa | GK | | Sanfrecce Hiroshima U18 | U18 |
| 01/2026 |  | Arne Janssen | AS-CO | |||
| 01/2026 |  | Issei Ouchi | GK |  | Matsumoto Yamaga | Matsumoto Yamaga |
| 01/2026 | | Takaaki Shichi | DF |  | Avispa Fukuoka | Avispa |
| 01/2026 | | Taishi Matsumoto | MF |  | Urawa Red Diamonds | Red Diamonds |
| 01/2026 | | Rento Noguchi | MF | | Sanfrecce Hiroshima U18 | U18 |
| 01/2026 | | Motoki Ohara | MF |  | Albirex Niigata | Albirex Niigata |
| 01/2026 | | Hiroto Ota | MF | | Sanfrecce Hiroshima U18 | U18 |
| 01/2026 | | Shun Ayukawa | FW |  | Oita Trinita | Oita Trinita |
| 01/2026 | | Akito Suzuki | FW |  | Shonan Bellmare | Shonan Bellmare |
| 01/2026 | | Bartosch Gaul | MA |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 09/2026 | | Takaaki Shichi | DF |  | Kyoto Sanga FC | Kyoto |
| 07/2026 | | Sota Nakamura | FW |  | Havre AC | HAC |
| 07/2026 | | Cailen Hill | GK |  | Blaublitz Akita | Blaublitz Akita |
| 07/2026 | | Motoki Ohara | MF |  | Júbilo Iwata | Júbilo Iwata |
| 07/2026 | | Ryo Germain | FW |  | Shimizu S-Pulse | S-Pulse |
| 07/2026 | | Kosuke Kinoshita | FW | | Shimizu S-Pulse | S-Pulse |
| 02/2026 | | Aren Inoue | FW | | Matsumoto Yamaga | Matsumoto Yamaga |
| 02/2026 | | Shinya Sakoi | AS-CO |  | Yokohama F. Marinos | Marinos |
| 01/2026 |  | Min-ki Jeong | GK |  | Suwon FC | Suwon FC |
| 01/2026 | | Michael Skibbe | MA |  | Vissel Kobe | Vissel Kobe |
| 01/2026 | | Serhat Umar | AS-CO | | Vissel Kobe | Vissel Kobe |