[4] On June 13, 2011, Kitamura was banned from amateur wrestling for two years after testing positive for anabolic steroids, specifically, the illegal muscle building drug drostanolone.

[7] On March 13, 2017, he made his televised debut, teaming with Oka in a loss to the Guerrillas of Destiny (Tama Tonga and Tanga Loa).

[7] The following day, Kitamura teamed with Katsuyori Shibata and Yuji Nagata in a loss to TenCozy (Satoshi Kojima and Hiroyoshi Tenzan) and Juice Robinson.

In the World Tag League, Kitamura and fellow young lion David Finlay finished last in their block after losing all seven of their matches.

[15][16][17] Kitamura made his mixed martial arts debut against Bobby Ologun at Rizin 32 on November 20, 2021, He lost the bout via rear-naked choke in the second round.

[18] Kitamura died on October 12, 2022, at age 36; reportedly, he felt unwell and called an ambulance to take him to a hospital, where his condition rapidly deteriorated.