Debut in 1964 with "Pia no Shouzou" on Shoujo Friend with which she won the 1964 Koudansha New Face Cartoon Award. Classic Shoujo-mangaka. Satonaka has become a TV celebrity and appeared many times on TV quiz shows.
In 1974, she took the Koudansha Publishing Culture Award with "Shining Tomorrow" (Ashita Kagayaku) and "There Goes the Princess" (Hime ga Yuku); the Koudansha Cartoon Award in 1980 with "The Hunter's Constellation" (Kariudo no Seiza). She serves as an Executive Director of the Japan Cartoonists Association.