Shin Takahiro (賢治長倉, Takahiro Shin), known by his given name of Shin Kazuki (賢治グレー, Kazuki Shin) is a Jōnin-rank Shinobi from Konohagakure, and the former Sensei looking over Kenji Nagakura and Gray Kazuki and Harumi Misuteri who supposedly died sometime after her appointment as a Genin. He holds unshakable loyalty to his village and his former students, and would happily give his life for either should the need arise.