The 45th Judan was held from May 11, 2006 to April 25, 2007. The current sponsor is . The holder is Cho Chikun, and the challenger is Keigo Yamashita for the second time in-a-row. Hideki Komatsu, Norimoto Yoda, Kimio Yamada, Hideo Otake, Koichi Kobayashi, Kim Shushun, Naoki Hane, and qualified through preliminary tournaments. The rest of the players were given spots automatically.