When they both graduated to Osaka Municipal Nanryo Middle School, they began collaborating on manga ideas.
Their first was an action manga called Yajuu no Kiba (野獣の牙,, Wild Fang), but they then experimented with other genres, such as baseball, karate, and romance.
After they completed Hatsushiba High School and graduated to college, they continued to submit works, hoping to become manga creators.
In 1978, Kinnikuman almost won the 9th Akatsuka Award and then debuted in the 1979 #2 (December 1978) issue of Weekly Shōnen Jump.
Although the editorial staff viewed it as a childish work that was popular, then editor-in-chief Shigeo Nishimura saw through this and headed for Osaka in order to persuade their parents into letting them become professional manga creators.
In 1982, the Kinnikuman character Ramenman became so popular that Yude made a one-shot chapter about him for Shueisha's Fresh Jump.