Sakurai started working at HAL Laboratory where he created Kirby at 19 years of age. He continued working there until August 5, 2003, which made many believe that the Kirby and Super Smash Bros.series would no longer be made.
He resigned seeking more freedom and was not happy with the structure of HAL, or the sequelization of the industry.
In September 2005, he announced his own company, Sora, Ltd., in which they have completed their first game, Super Smash Bros. Brawl, with support form other companies. He updated the Super Smash Bros .Brawl website, the Super Smash Bros. Dojo, with information about the game. He also writes a column in the Famitsu magazine.