Age: 16 (Anime/Manga), 17 (Light Novel/Web Novel)
Hair Color: Blonde/Flaxen
Eye Color: Caramel
Height: 155 cm
Birthday: December 6th

Mahiru's appearance is consistently described as beautiful. Her straight, well-groomed, flaxen blond hair is silky smooth and lustrous. Her large caramel-colored eyes are framed by long lashes on both the top and bottom. Additionally, she has pale, milky-white skin that is soft and flawless, and a shapely nose.

Her clothing choices are trendy yet high-quality and practical. They are modest and not too revealing, reflecting her humble and unassuming personality.

Due to her parents' abandonment, both physically and emotionally, Mahiru was raised by Koyuki-san, a housekeeper. This has made her very withdrawn, much like a lone flower in an unreachable place. She hides her thoughts and feelings behind a figurative mask, appearing angelic but distant. Mahiru excels in cooking, impressing Amane, his friends, and his parents. She is also very organized, practical, and frugal, easily managing household tasks.

Mahiru excels both academically and athletically, often ranking at the top of her class with perfect scores. She is a tireless worker who strives to make her achievements seem effortless.

Mahiru is an innocent, cute, kind, and loving person with a strong moral compass and a deep generosity. She goes out of her way to help others when she feels safe doing so. While she maintains a guarded demeanor, especially regarding her parents, she avoids lying and tends to become reserved or cold when discussing past trauma. Her private honesty emerges more clearly when she is alone, though she never expresses it harshly.

Mahiru has some social awkwardness, particularly in close relationships, often making gestures that might be misinterpreted. She also struggles with self-confidence and is often surprised by, and relieved from, genuine compliments from Amane.

Mahiru, being the most popular girl at school, primarily interacts with other female students due to the frequent and unwanted attention from boys who are infatuated with her. She dislikes this attention and is cautious about trusting strangers. To keep people at a distance and protect her privacy, she readily lies or obfuscates the details of her life. Despite these efforts, she maintains an impeccable image, always appearing polite and humble about her achievements, which further reinforces her perfect reputation among her peers.

(Source: Otonari no Tenshi-sama Wiki)