Who is Shunsuke Nakamuras trainer?

Shunsuke Nakamura, the Japanese footballer known for his exceptional skills, has been influenced by various coaches throughout his career. Notably, during his time at Celtic, he was guided by manager Gordon Strachan. Additionally, as a player, he has also credited former coaches in Japan, such as Takeshi Okada, for shaping his development. However, Nakamura's training and development have been a collective effort involving multiple figures in his football journey.