[1] He was an accountant, program producer and executive assistant of Katsuji Ebisawa, the chairman of NHK from 1997 through 2005.

He leaked information about NHK's accounting scandals to the Shukan Bunshun in 2005,[2] which forced him to retire.

On 27 December, the Tokyo District Court dismissed his request to sue the owner of one seg cell phone for the contract of NHK bill collection.

[8] The Anti-NHK party then ran candidates in the 2021 Japanese general election, but failed to win any seats, falling short of the national proportional vote requirement.

GaaSyy had an arrest warrant out for him over threats made by him online, and despite the immunity given to members of the House of Councilors, opted not to return to Japan.

[9] In 2024, he ran in the Hyogo gubernatorial election but conducted an unusual campaign, urging people to vote for Motohiko Saitō instead of himself.

[clarification needed] Watanabe made a libel for criminal charge and damages against Tachibana.

Watanabe then criticized Tachibana who insisted that the case was without foundation, stated that there was a problem in the law mind spirit, and refused to pay the 300,000 yen fee.

[11] In the video, he also questioned Japan's aid for underdeveloped countries, saying that poverty and violence were part of "The natural order God created."

"[12] In a subsequent video issued on his YouTube channel, he rejected these reports, said he was not in favor of such policies, and that he only said these things in order to generate controversy and media coverage.

[13] In September 2019, Tachibana recorded video footage of a business mobile terminal displaying the personal information of NHK subscribers.