Open the Dream Gate Championship
After returning from an injury, Takagi disbanded Kamikaze on May 13, 2011 and the following day joined forces with Masaaki Mochizuki's new stable, Junction Three, to battle Cima's Blood Warriors. After Junction Three was disbanded in February 2012, Takagi, alongside Yamato, joined up with Dragon Gate Nex Member Chihiro Tominaga, and the debuting Super Shenlong III and formed -akatsuki- on April 19, 2012. On July 22, 2012, Takagi and Yamato defeated Jimmy Kagetora and Jimmy Susumu to become the 22nd Open the Twin Gate Champions. They lost the title to Don Fujii and Masaaki Mochizuki on September 23, 2012. Takagi and Yamato won the title for their third time together on May 5, 2013, by defeating BxB Hulk and Uhaa Nation. They lost the title to Akira Tozawa and BxB Hulk on June 15, when Yamato turned on Takagi. On July 21, Takagi defeated Cima to win the Open the Dream Gate Championship for the second time. On August 1, -akatsuki- was forced to disband, after losing to Mad Blankey in a five-on-four tag team match. On August 23, Takagi lost the Open the Dream Gate Championship to Yamato in his first defense. In order to continue his battle with Mad Blankey, Takagi formed a new stable named Monster Express with Akira Tozawa, Masato Yoshino, Ricochet, Shachihoko Boy and Uhaa Nation. On December 22, Takagi and Tozawa defeated Naruki Doi and Yamato to win the Open the Twin Gate Championship. They lost the title to Eita and T-Hawk on July 20, 2014. On August 31, Shingo, Tozawa and Uhaa Nation unsuccessfully challenged for the Open the Triangle Gate Championship against Cyber Kong, Naruki Doi and Kzy with Shingo getting pinned after Kong hit him with the Cyber Bomb. Shingo and Tozawa lost in the Summer Adventure Tag League semi-finals against T-Hawk and Eita. On December 28, Shingo unsuccessfully challenged for the Open the Dream Gate title against BxB Hulk. On August 16, 2015, Takagi defeated Masato Yoshino to win the Open the Dream Gate Championship for the third time. Shortly afterwards, Takagi was kicked out of Monster Express after turning on his then-stablemates Yoshino and Shachihoko BOY. Takagi would then form a new heel unit with the remnants of Mad Blankey, becoming the co-leader of the unit alongside Naruki Doi. On September 23, 2015, the new unit was named VerserK. On February 14, Takagi lost the Open the Dream Gate Championship to Jimmy Susumu in his fourth defense. He would regain the title from Susumu on March 6, becoming the first four-time champion. On July 24, 2016, Takagi lost the championship to Yamato. On January 18, 2017, Takagi, along with fellow VerserK teammates T-Hawk and El Lindaman won a special One Day 6 Man Tag Tournament, defeating Kotoka, Masato Yoshino and Ben-K.