Former 3rd seat of the 13th Division and served under Captain Jushiro Ukitake
Not much is known about Miyako aside from what was seen during a flashback scene. She was a member of the 13th division and was married to Kaien Shiba, she was very respected in her division as most junior members would address her as "Miyako-dono".
Miyako served as the 3rd seat of the 13th Division and was very much loved by both her husband and the rest of her division. As a female Shinigami who had worked hard, and gaining herself a high position in the division, her intelligence as well as her looks she was highly admired by Rukia Kuchiki. The events of her death vary somewhat between the manga and the anime.