14 years old. Maybe not quite Harimoto level at the same age, but not too far off.
OTOH, Matsushima will likely not be another Harimoto but probably another Niwa. He's grown quite a bit during the last year but is still too short for a 13-year-old.
13-year-old Sora Matsushima Advances to Top 8! To the Youngest Junior Boy Victory [All-Japan Table Tennis]13歳 松島輝空 8強入り!ジュニア男子最年少Vへ前進【全日本卓球】
松島輝空 2021.01.13
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Q.去年より動けている?
去年は身長も低かったり体もみんなより全然小さかったんですけど、中学生になって身長も大きくなってきたので違ってきている。