Naoki Koyama
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| Naoki Koyama 4-dan | |
|---|---|
| Native name | 小山直希 |
| Date of Birth | 7 October 1999 |
| Place of Birth | Shinjuku Ward, Tokyo Metropolis |
| Teacher | Makoto Tobe 7-dan |
| Ryuo group | Group 6 |
| Junni class | Class C2 |
| Rank | Date |
|---|---|
| 6-kyu | February 2013 |
| 3-dan | September 2017 |
| 4-dan | 1 April 2023 |