TV-Series
Description
Aoi Mishina possesses striking blue hair and matching blue eyes. Her appearance adapts to the situation, though she is frequently seen in her school uniform for daily activities.

Her personality exhibits harsh or selfish tendencies at times, yet she consistently demonstrates supportive behavior towards others, especially when operating as Musume Blue. She ranks among her school's top athletes, showcasing notable physical abilities. Her intelligence extends to business management, where she makes key decisions on clothing designs and sales for a fashion enterprise.

Aoi grew up alongside her sisters under the care of their uncle and Modoki following the death of their parents, Dr. Mishina and his wife. Her childhood included assisting her father in his office. After her parents' demise, Aoi and her sisters Midori and Kurenai inherited unique helmets crafted by their father and Dr. Kishida. These "Musumet" helmets harness the power of three fallen shooting stars (red, blue, and green), granting enhanced abilities to their wearers.

As Musume Blue, the helmet grants her superhuman capabilities. Her speed in this form surpasses the untransformed Musume Red, and her strength exceeds other team members. The transformation alters only her helmet, gloves, and boots; her regular clothing—be it school uniform, athletic wear, swimwear, or other attire—remains unchanged. She currently balances life as a teenager attending school with her responsibilities as a superheroine for the secret organization MET, responding to emergencies to protect people from threats linked to the remaining four shooting stars.

Relationships significantly shape her character. With her younger sisters Kurenai and Midori, she experiences typical sibling dynamics involving disagreements and arguments, yet they consistently support each other. Her initial interactions with Yamato Shirai involved treating him as an assistant, but recognizing his positive qualities led to the development of romantic feelings. She displays little affection or respect toward her uncle Hiroshi Kushina, though she places some trust in him. Her relationship with Modoki lacks overt friendliness, yet she treats them as family. While not particularly close to Murasaki, they collaborate as fellow MET team members. Nako handles maintenance for her blue helmet, though they do not socialize extensively.