日テレG+杯争奪ジュニアヘビー級タッグ・リーグ戦
With a background in judo, Miyahara made his professional wrestling debut on February 11, 2008, at a Kensuke Office event, losing to All Japan Pro Wrestling (AJPW) representative Seiya Sanada. Through Kensuke Office's relationship with Pro Wrestling Noah, Miyahara also began making appearances for Noah, taking part in both the NTV G+ Cup Junior Heavyweight Tag League and Mauritius Cup later in the year. Miyahara continued working regularly for both Kensuke Office and Pro Wrestling Noah for the next few years, being pegged as the "next Kensuke Sasaki". On May 17, 2012, Miyahara made his Mexican debut for International Wrestling Revolution Group (IWRG), when he represented a team of Japanese wrestlers in the 2012 Copa Higher Power. In February 2013, Miyahara entered a storyline, where he turned on Sasaki and the former Kensuke Office, now known as Diamond Ring, by joining the villainous Voodoo Murders stable. Backed by his new partners, he then started a storyline rivalry with the remaining Diamond Ring representatives such as Katsuhiko Nakajima and Satoshi Kajiwara.