| 2 | DF | Riku Matsuda | | Contract renewal (Official 1/6) |
| 3 | DF | Ryosuke Shindo | | Contract renewal (Official 1/6) |
| 4 | MF | Riki Harakawa | | Contract renewal (Official 1/6) |
| 5 | MF | Hinata Kida | | Contract renewal (Official 1/6) |
| 6 | DF | Ryosuke Yamanaka | | Contract renewal (Official 1/7) |
| 7 | FW | Satoki Uejo | | Contract renewal (Official 12/9) |
| 9 | FW | Adam Taggart | Perth Glory (The West Australian 11/10, FTBL 12/14) | Perth Glory (Official 12/15) |
| 10 | MF | Hiroshi Kiyotake | | |
| 11 | FW | Bruno Mendes | Loan expiration (Hochi 11/6) | Loan expiration (Official 12/1) |
| 14 | DF | Yusuke Maruhashi | | BG Pathum United (Loan, Official 12/26) |
| 16 | MF | Seiya Maikuma | | Contract renewal (Official 12/9) |
| 17 | MF | Tokuma Suzuki | | Contract renewal (Official 12/9) |
| 19 | MF | Hirotaka Tameda | | Contract renewal (Official 12/30) |
| 20 | FW | Mutsuki Kato | | Contract renewal (Official 1/7) |
| 21 | GK | Kim Jin-hyeon | | Contract renewal (Official 12/9) |
| 22 | DF | Matej Jonjic | | Contract renewal (Official 1/7) |
| 23 | DF | Tatsuya Yamashita | | Contract renewal (Official 1/7) |
| 24 | DF | Koji Toriumi | | Contract renewal (Official 12/23) |
| 25 | MF | Hiroaki Okuno | | Contract renewal (Official 12/12) |
| 26 | MF | Jean Patric | | Vissel Kobe (Official 1/7) |
| 29 | DF | Kakeru Funaki | | Contract renewal (Official 12/9) |
| 31 | GK | Keisuke Shimizu | | Contract renewal (Official 12/12) |
| 33 | DF | Ryuya Nishio | | |
| 34 | FW | Hiroto Yamada | | Vegalta Sendai (Loan, Official 11/30) |
| 38 | FW | Sota Kitano | | Contract renewal (Official 12/30) |
| 39 | GK | Kohei Maki | | Contract renewal (Official 12/23) |
| 41 | MF | Hikaru Nakahara | | Contract renewal (Official 1/7) |
| 49 | MF | Chaowat | Loan expiration (Siamsport 11/6) | Loan expiration (Official 12/1) |
| Loan | MF | Kosei Okazawa | | Contract renewal (Official 12/23) |
| Loan | MF | Nagi Matsumoto | | Ventforet Kofu (Loan extension, Official 12/9) |
| Loan | FW | Ryuji Sawakami | | Gainare Tottori (Loan extension, Official 12/19) |
| Loan | GK | Shu Mogi | | FC Gifu (Official 12/5) |
| Loan | MF | Motohiko Nakajima | | Vegalta Sendai (Loan extension, Official 11/22) |
| Loan | FW | Shota Fujio | | Return from loan (Official 12/30) |
| Loan | MF | Jun Nishikawa | | Sagan Tosu (Loan extension, Official 12/24) |
| Loan | DF | Takaya Yoshinare | | FC Osaka (Official 12/20) |
| Loan | DF | Tiago | | Contract expiration (Official 11/22) |
| Loan | DF | Naoto Arai | Albirex Niigata (Sponichi 11/14) | Albirex Niigata (Official 12/2) |
