河野真幸
On December 21, Tanaka along with Masakatsu Funaki and Masayuki Kono formed the stable Stack of Arms. The stable tried to start of strong by winning the AJPW Junior Tag League 2012, but failed in their attempt, not even getting through the starting stages. From this point, Stack of Arms have feud against Team Destruction (Kaz Hayashi, Shuji Kondo and Suwama). When Koji Kanemoto joined Stack of Arms in October 2012, their fortunes turned around, Kanemoto and Tanaka defeated Kazushi Miyamoto and Tomoaki Honma to win the vacant All Asia Tag Team Championship. On January 26, 2013, Kanemoto and Tanaka, calling themselves Junior Stars but still part of Stack of Arms, lost the titles to Hikaru Sato and Hiroshi Yamato but would regain the title less than a month later. Their second reign ended on April 25, 2013, when they were defeated by Atsushi Aoki and Kotaro Suzuki. In June 2013, Tanaka, along with the rest of Stack of Arms, announced his resignation from All Japan in the aftermath of Nobuo Shiraishi taking over as the promotion's new president. On June 30, Tanaka unsuccessfully challenged Yoshinobu Kanemaru for the World Junior Heavyweight Championship in his final All Japan match.