In January 2002, in opposition to Antonio Inoki focusing the IWGP title on unreliable shoot style wrestlers such as Kazuyuki Fujita and Tadao Yasuda, Kojima left NJPW with his mentor Keiji Mutoh, and joined All Japan Pro Wrestling where he was finally able to receive the push of a top star. He held both of the company's tag team titles, the World Tag Team Championship twice. On February 16, 2005, he won the Triple Crown Heavyweight Championship, AJPW's unified heavyweight championship from Toshiaki Kawada.