Open the Brave Gate Championship
When Seikigun disbanded at the end of 2002, he joined Masaaki Mochizuki's Shin M2K stable at the start of 2003. He stayed with the group until it dissolved in December, after Mochizuki lost a match to stablemate Kenichiro Arai. After that, Kid would go unaligned until mid-2004, and in May he won that year's El Numero Uno Tournament to the surprise of everyone. In mid-2004, he became a member of Do FIXER, and would stay in it until the very end. During his tenure with them, he won the Open the Brave Gate Championship from inaugural champion Naruki Doi in November 2005, and would hold the Open the Triangle Gate Titles with Ryo Saito and Genki Horiguchi on three separate occasions in 2005 and 2006. During the last few months of 2006, he contracted appendicitis, forcing him out of action for several months.