[2] As his father was an enthusiast of education, Yokobori Jr. regularly attended the home of a United States Army officer to practice his English conversation skills.

After graduation from high school, he resisted his father's persuasion to enter college education in favor of starting his mail order scale model retail business, which thrived as model stores was solely available at metropolitan areas.

As a result, the business increased twofold and then with this opened another store at Ginza.Yokobori branched out into R/C car production in 1977[2] when the shop[4] built a ready to run version of Cox's 049 Dune Buggy, which was sold as a kit.

[3] The car was replaced by the YZ-870C, known as the "Super Dog Fighter", jointly developed by Masami Hirosaka, who was brought into the company following his victory at the following IFMAR 1:10 Off-Road 4WD event.

Following the decision of Yokobori to retire, Shigeki Suzuki was appointed to replace him as the CEO, effective from October 1, 2019.