Miya Miyao is a seventeen-year-old idol affiliated with 765 Production, appearing as a supporting character in The IDOLM@STER Million Live! franchise. She has brown eyes, long brown hair, and thick eyebrows, and her birthday is April 24. She is known for her gentle, relaxed, and air-headed demeanor, often described as a calm and fluffy-type girl. Despite this, she possesses a positive attitude, speaks politely and in a slow, drawn-out manner, and occasionally shows a mischievous side. Miya tends to move at her own pace, but she always gives her best effort in everything she does.

Her hobbies include the board games Go and Shogi, which she plays with a surprising level of skill that reveals a sharper intelligence than her outward appearance suggests. Her notable ability is excellent vision, and her favorite food is sandwiches. In the story, Miya is one of the many idols working with the 39 Project during the events of Theater Days, and she interacts with both the established 765 Pro idols and fellow newcomers. Her easygoing nature makes her approachable, though she can be somewhat passive, especially in arguments, preferring to avoid confrontation. Over time, she grows more confident in her role as an idol, though her core personality remains consistently laid-back and kind. Her key relationships are naturally with the other idol cast members, as part of the larger Million Live ensemble, but she does not have a specific designated partner or rival. Miya’s development is subtle, centered on learning to assert herself more while staying true to her unique charm.