In mid 2006 Ishikari started to appear on New Japan Pro-Wrestling shows and his activity with the company then increased in 2006 and 2007 and finally in 2009 he became an official member of the NJPW roster. He would find himself a tag team partner in Milano Collection A.T. and together they would challenge for the IWGP Junior Heavyweight Tag Team Championship held by Prince Devitt and Ryusuke Taguchi but were unable to win the title. Consejo Mundial de Lucha Libre (2010) After Milano Collection A.T. announced his retirement in January 2010, New Japan announced that Taichi would be leaving for Mexican promotion Consejo Mundial de Lucha Libre (CMLL) to seek a new direction in his career. The plan was for him to remain with CMLL for at least five months. Taichi made his CMLL debut on February 19, 2010, in Arena México, Mexico City where he teamed up with Naito and Ray Mendoza, Jr. to defeat Strong Man, Mr. Niebla and Máximo in two straight falls. On May 7, 2010 Taichi and Okumura teamed up with former IWGP Heavyweight Champion Hiroshi Tanahashi to defeat El Hijo del Fantasma, La Máscara and Héctor Garza to win the CMLL World Trios Championship in the main event of the weekly Friday night Super Viernes show. La Ola Amarilla's reign as Trios champions only lasted two weeks as they were defeated by La Máscara, La Sombra and Máscara Dorada on May 21, 2010. Through the trios matches Taichi has developed a rivalry with La Máscara who challenged Taichi to a Lucha de Apuesta match where Taichi would put his hair on the line against La Máscara's mask. Taichi later announced that he accepted the challenge, making it the main event of CMLL's 2010 Sin Salida show. On June 6, 2010 Máximo defeated Taichi two falls to one and had his hair shaved off after the match. Afterwards Taichi returned to New Japan, before returning to CMLL for a two-month stint in early October 2010. Return to NJPW (2010–present) Junior Heavyweight Division (2010-2016) On December 11, 2010, Taichi returned from his latest stint in CMLL and aligned himself with IWGP Heavyweight Champion Satoshi Kojima as part of Kojima-gun, which would later also come to include MVP, Nosawa Rongai and Taka Michinoku. On April 8, 2011, Taichi defeated Madoka in the finals of a two-day tournament to earn a spot in the 2011 Best of