Mii Hasegawa, legally named Minori Hasegawa, is a diligent third-year student at Takao Junior High School. She holds the position of student council vice president and leads the club supervision committee, showcasing her adeptness in guiding peers and managing tasks.

Mii’s medium-length blonde hair and striking purple eyes complement her idol image. Outside performances, she opts for practical lower braided twin-tails, maintaining a balance between her everyday student life and her meticulously crafted stage persona, characterized by playful charm.

A rising solo idol, Mii captivates audiences at events through dynamic vocals and magnetic performances. Her speech carries a distinct flair, punctuating phrases with a self-referential "mii" that reinforces her memorable identity.

Juggling academic leadership with artistic ambitions, Mii embodies disciplined multitasking. Her structured school responsibilities coexist with rigorous idol pursuits, illustrating a steadfast drive to excel in both realms. This synergy of duty and passion underscores her resolve to achieve personal and professional milestones.