Miki is a female college student who works as a private tutor in the anime Aoi Taiken. She has black hair that reaches her neck and black eyes. While tutoring at her student’s home, she accidentally witnesses the student’s mother engaged in a sexual encounter. The sight arouses her curiosity and excitement, prompting her to deliberately provoke and seduce her young male student. Her actions lead to the student losing his virginity, making her the catalyst for his sexual awakening. Miki’s personality is marked by a mix of boldness and playful manipulation; she takes the initiative and exercises control over the situation. Her motivations are rooted in personal curiosity and the thrill of the forbidden. The key relationship in the story is the one she forms with her student, which is defined by a power imbalance and her role as both an authority figure and an object of desire. The narrative does not explore significant development beyond her seduction of the student, and she does not possess any supernatural or extraordinary abilities.