TV-Series
Description
Millie is a supporting character in the anime Daphne in the Brilliant Blue. She is introduced as a childhood friend of Shizuka Hayama, one of the main members of the Nereids organization. Over the course of the story, she also becomes a friend to the protagonist, Maia Mizuki. Millie is a skilled race car driver, and her most prominent appearance involves a high-speed test vehicle incident in which she is injured, prompting Maia to take the wheel and become involved in industrial espionage.

In terms of background, Millie is distantly linked to the series' lore through her great‑grandmother, Ai Mayuzumi, who is the protagonist of the manga prequel I – Daphne in the Brilliant Blue. Ai served as a bodyguard to Maia’s father, establishing a subtle ancestral connection between Millie and the central family. This legacy does not heavily influence Millie’s immediate role in the anime, but it adds depth to her heritage.

Personality‑wise, Millie is portrayed as energetic, friendly, and loyal. She shares a warm rapport with Shizuka and quickly extends that camaraderie to Maia. Her motivation seems centered on her passion for racing and her desire to support her friends. She is not a member of Nereids, but her skills as a driver make her a valuable ally when speed is required.

Millie’s key relationships are with Shizuka, whom she has known since childhood, and later with Maia. Through her involvement, she helps integrate Maia into the broader network of contacts that Nereids relies on. She does not undergo significant character development over the series, as her appearances are limited, but she consistently exhibits reliability and a willingness to help despite personal risk.

Her most notable ability is her exceptional driving talent, which includes precise control and the capacity to handle prototype vehicles under pressure. This skill sets her apart from the main cast and marks her as an expert in her niche. Physically, she is depicted as a teenage girl with short maroon hair and red eyes. Her role in the story is that of a capable friend who provides critical support during a key mission, reinforcing the theme of teamwork that runs through the series.