Miku Nakano is one of the five identical Nakano quintuplets from The Quintessential Quintuplets. She is the third sister, typically 17–18 years old during the main story. She has medium-length reddish-brown hair with strands often covering part of her face, dark blue eyes, and a calm, somewhat stoic expression. She is known for always wearing headphones around her neck and often pairing her uniform with black pantyhose. Though all quintuplets are beautiful, Miku has a quiet, elegant charm.

Personality-wise, Miku is the shyest and most introverted of the sisters. She speaks softly in a low, gentle tone, tends to be reserved, and often struggles with self-confidence, frequently feeling overshadowed by her more assertive siblings. Despite her timid nature, she possesses quiet determination and is very perceptive and empathetic. She is honest with her feelings once she opens up and shows steady growth throughout the series, gradually becoming more confident while staying true to her gentle core.

Her main hobbies include Japanese history (especially the Sengoku period and warlords), listening to music, and enjoying matcha-flavored foods. She has a calm, low-energy demeanor and prefers subtle, thoughtful actions over bold ones