Danshoku Dino
From 2005 to 2009, Sawa made a couple of appearances per year for DDT, where he went on to become a two-time Ironman Heavymetalweight Champion as Lingerie Mutoh. In 2010, Sawa began working more regularly for the promotion under his real name, winning the Ironman Heavymetalweight Championship two more times, before he and Sanshiro Takagi defeated Kudo and Yasu Urano on February 11, 2010, to win the KO-D Tag Team Championship. On July 4, Sawa also unsuccessfully challenged Danshoku Dino for the DDT Extreme Division Championship. After twelve successful defenses and a reign of 199 days, Sawa and Takagi lost the KO-D Tag Team Championship to Danshoku Dino and Shiro Koshinaka on August 29 in a three-way match, which also included Mikami and Tanomusaku Toba. Sawa returned to DDT on June 4, when he and Shigehiro Irie defeated Gentaro and Yasu Urano to win the KO-D Tag Team Championship. The team's reign would last only fifteen days, before they lost the title to Kenny Omega and Michael Nakazawa in their first title defense. On July 24 at "Ryogoku Peter Pan", DDT's largest annual event, Sawa and Sanshiro Takagi defeated Great Sasuke and Ricky Fuji to win the Greater China Unified Nakahara Tag Team Championship. On November 4, 2011, Sawa returned one last time to DDT, teaming with Sanshiro Takagi in a 59-minute three-way tag team match, where they defeated Choun Shiryu and Danshoku Dino, and Brahman Kei and Brahman Shu to retain the Greater China Unified Nakahara Tag Team Championship. During his years in DDT, Sawa also performed on the promotion's New Beijing Pro Wrestling (NBPW) events, working as Lee Ranjei, a Chinese version of his Lingerie Mutoh persona.