Miki is the scion of a powerful and wealthy "Hanakain Family." She is a childhood friend of Megumi Amatsuka, and the first to know about his curse. She is supportive and a helpful person when Megumi is sad.
Miki is a girl with black hair, eyes and is smaller than Megumi. As a student, she is usually seen wearing her school uniform. Outside the school she is wearing her casual clothes.
Miki is loyal and believe in her friends. She also want Megumi to be a girl.