河野真幸
In December 2002, Ishikari made his debut for All Japan Pro Wrestling (AJPW). He would pick up his first singles victory over heavyweight prospect Masayuki Kono about six months into his career on May 12, 2003. He got a huge opportunity by representing AJPW in the 4th Stage Super J-Cup hosted by Osaka Pro Wrestling in 2004, but came up short after losing to Osaka Pro ace Takehiro Murahama in the first round. Teaming with Toshiaki Kawada in the Autumn Festival Tag Tournament, he earned both victories in their finals matches to win his first tournament. He was AJPW's first junior heavyweight prospect in a long while, being a very quick and fiery youngster who was coming along well. Ishikari began 2005 by challenging for the World Junior Heavyweight Championship against champion Taka Michinoku in a losing effort, then continued wrestling in the lower mid-card.