Akutsu wreaks havoc in Seigaku, attacking Kachiro and Arai. Ryoma intervenes, and when Akutsu throws a rock at him, he is able to hit it back with his racket. However, when Akutsu throws several rocks at him, he gets injured in the process. When the regulars later spot Kawamura and Akutsu having a secret meeting, they are surprised to find that the two have known each other since childhood. (thetvdb.com)