GHC Junior Heavyweight Championship
Harada started off his 2014 in Noah with a win over Atsushi Kotoge on January 5, after which he announced that he wanted to join the No Mercy stable. On January 12, though defeated by No Mercy leader Kenta in a singles match, Harada was accepted as the newest member of the stable. According to Harada, one of his main reasons for joining No Mercy was to continue chasing the GHC Junior Heavyweight Championship, held by Taiji Ishimori, who represented No Mercy's rival stable, Brave. On January 25, Harada pinned Ishimori in a six-man tag team match between No Mercy and Brave to earn another shot at his title. On March 8, Harada defeated Ishimori to win the GHC Junior Heavyweight Championship for the first time. Harada made his first successful title defense on April 19 against former tag team partner Atsushi Kotoge. His second successful defense took place on May 31 against Quiet Storm. On July 5, Harada defeated Kenoh for his third successful title defense. Later in the month, Harada came together with Quiet Storm to take part in the 2014 NTV G+ Cup Junior Heavyweight Tag League. After finishing their round-robin block with a record of three wins and one loss, Harada and Storm advanced to the finals on August 2, where they were defeated by Hajime Ohara and Kenoh. Harada avenged the loss against Ohara by pinning him in a three-way match, also involving Zack Sabre Jr., on August 17 to make his fourth successful defense of the GHC Junior Heavyweight Championship. Harada continued making successful defenses of the GHC Junior Heavyweight Championship, defeating Shiori Asahi on September 21, Super Crazy on October 12, and Zack Sabre Jr. on November 4. Harada's reign ended on December 6, when he was defeated by Atsushi Kotoge in his eighth title defense. On January 18, 2015, Harada and No Mercy stablemate Genba Hirayanagi unsuccessfully challenged Hajime Ohara and Kenoh for the GHC Junior Heavyweight Tag Team Championship. Six days later, Harada also received a rematch for the GHC Junior Heavyweight Championship, but was again defeated by Kotoge. In March, Harada traveled to Germany to take part in Westside Xtreme Wrestling's (wXw) 2015 16 Carat Gold tournament, where he made it to the quarterfinals, before losing to Zack Sabre Jr. On June 13, Harada received a shot at the GHC Junior Heavyweight Championship, but was defeated by the defending champion, Taichi, after being hit with the title belt.