Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 08/2026 |  | Javi Hernández | DF |  | CD Leganés | Leganés |
| 08/2026 |  | Jackson Irvine | MF |  | FC St. Pauli | St. Pauli |
| 07/2026 |  | Yota Komi | MF |  | Kashiwa Reysol | Kashiwa Reysol |
| 07/2026 | | Pablo Machín | MA | |||
| 07/2026 | | Koto Abe | GK |  | Júbilo Iwata | Júbilo Iwata |
| 07/2026 | | Go Kambayashi | GK |  | Matsumoto Yamaga | Matsumoto Yamaga |
| 07/2026 | | Seinosuke Kimura | DF | |||
| 07/2026 | | Niko Takahashi | DF |  | Almere City FC | Almere City FC |
| 07/2026 | | Kosei Okazawa | MF |  | Fujieda MyFC | Fujieda MyFC |
| 07/2026 | | Koki Nagasoe | FW | |||
| 07/2026 |  | Pablo Sabbag | FW |  | Al Ahli Tripolis | Al Ahli Tripoli |
| 07/2026 | | Teppei Shiojiri | FW | |||
| 07/2026 | | José Luis Schneider Tirado | AS-CO | |||
| 07/2026 | | Ryo Shigaki | AS-CO | |||
| 07/2026 | | Kazuki Sasakata | GK-CO | |||
| 02/2026 | | Hayato Tanaka | DF | | Kashiwa Reysol | Kashiwa Reysol |
| 02/2026 | | Yasuaki Oshima | AS-CO | |||
| 01/2026 | | Kusini Yengi | FW |  | Aberdeen FC | Aberdeen |
| 01/2026 | | Kosuke Nakamura | GK | |||
| 01/2026 | | Travis Takahashi | DF |  | Mito HollyHock | Mito HollyHock |
| 01/2026 | | Yumeki Yokoyama | MF |  | FC Imabari | FC Imabari |
| 01/2026 | | Solomon Sakuragawa | FW |  | Yokohama FC | Yokohama FC |
| 01/2026 | | Nelson Ishiwatari | MF |  | Iwaki FC | Iwaki FC |
| 01/2026 | | Rui Osako | MF |  | SC Sagamihara | SC Sagamihara |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 08/2026 | | Eiji Kubo | MF |  | Reilac Shiga | Reilac Shiga |
| 08/2026 | | Hinata Kida | MF |  | JEF United Chiba | JEF United |
| 07/2026 | | Nelson Ishiwatari | MF |  | Sint-Truidense VV | STVV |
| 07/2026 | | Kyohei Yoshino | MF |  | Persija Jakarta | Persija Jakarta |
| 07/2026 | | Arthur Papas | MA |  | Al Ettifaq | Al Ettifaq |
| 07/2026 | | Koki Fukui | GK |  | Urawa Red Diamonds | Red Diamonds |
| 07/2026 |  | Jin-hyeon Kim | GK |  | Tochigi City | Tochigi City |
| 07/2026 | | Hayato Tanaka | DF |  | Tokushima Vortis | Tokushima Vortis |
| 07/2026 | | Shion Homma | MF |  | FC Tokyo | FC Tokyo |
| 07/2026 | | Rui Osako | MF |  | Tochigi SC | Tochigi SC |
| 07/2026 | | Wigi Kanemoto | FW | | Fujieda MyFC | Fujieda MyFC |
| 07/2026 | | Motohiko Nakajima | FW |  | Vegalta Sendai | Vegalta Sendai |
| 06/2026 | | Kusini Yengi | FW | | Aberdeen FC | Aberdeen |
| 02/2026 | | Kengo Furuyama | FW | | FC Imabari | FC Imabari |
| 01/2026 |  | Vitor Bueno | MF |  | Remo - PA | Remo |
| 01/2026 | | Niko Takahashi | DF | | Almere City FC | Almere City FC |
| 01/2026 | | Go Kambayashi | GK | | Matsumoto Yamaga | Matsumoto Yamaga |
| 01/2026 | | Kazuma Makiguchi | GK |  | Ehime FC | Ehime FC |
| 01/2026 | | Ryuya Nishio | DF |  | RB Omiya Ardija | RB Omiya Ardija |
| 01/2026 | | Ryosuke Shindo | DF |  | V-Varen Nagasaki | V-Varen |
| 01/2026 | | Rafael Ratão | FW |  | Shanghai Shenhua | Shanghai Shenh. |