Miss Miyasu was born into the her noble family as second daughter of Yuuji and Shin Miyasu at the 13th of February and until she reached the age of 19 was raised according to her family's traditions. After her older sister deceased due to a tragic incident she was receiving a quick spacecraft training and released into Sirius to gather her own experiences just like her father did at her age. Nowadays Miss Miyasu holds the representative position of the President of Miyasu Zaibatsu, which is known to have several contracts with suppliers of the two huge Keiretsu's and on occasional basis with the Gas Miner Guild.
Following her occupation as active Minister in Kusari's Cabinet, Miss Miyasu left the family to her Sister.