As a child, Miyagi only knew his mother. After she passed away when he was 17, he got offered a job at "Tachibana" by manager Kazuhi. Now 25, he is the chief of restaurant Tachibana and is being pursued by the new apprentice chef Kasuga Satoshi.
Spoiler, click to viewclick to hideMiyagi is an illegitimate child of his mother and president Tachibana. The owner of Kagetsutei, Tachibana Kazutaka, denies Miyagi as his younger half-brother.