Magalie, known in the original Japanese version as Miyuki Kashima, is a central character in the romantic comedy anime Miyuki. She is a high school student and classmate of the protagonist, Masato Wakamatsu, who is referred to as Tommy in the French adaptation. Her counterpart and namesake is Masato's stepsister, Miyuki Wakamatsu, who is called Elisa in the French version. This shared first name, which creates a homonymy that is central to the original story's tension, is a key element of her identity.

In terms of personality, Magalie is portrayed as a beautiful and popular student at school, well-regarded by her peers for her gentle and kind nature. She is characterized as being reserved, timid, and soft-spoken, presenting a stark contrast to the more outgoing and playful personality of her namesake, Elisa. Her quiet demeanor and classic feminine grace are defining traits that make her an object of affection for Masato.

Magalie’s primary role in the story is as Masato’s love interest and a key component of the romantic triangle that drives the narrative. The central conflict for Masato is his inability to choose between his feelings for Magalie, his demure classmate, and his growing, complicated affection for his live-in stepsister, Elisa. Magalie is the more conventional romantic option, representing a normal high school relationship, while the situation with Elisa is fraught with familial and emotional complexity. Her role is often to be the catalyst for Masato's romantic efforts, even as misunderstandings frequently arise between them. She is the girl Masato is trying to date at the beginning of the story, which directly leads to his initial failure to recognize his stepsister upon her return to Japan.

Regarding key relationships, her most significant connection is with Masato Wakamatsu. Their dynamic is built on mutual, yet often awkward, romantic interest. Masato has a crush on her from the start, and while she reciprocates his feelings, she frequently misinterprets his actions, often due to his complicated home life with Elisa. Another important relationship is with her father, Yasujiro Kashima, who is a policeman. In a recurring source of comedic conflict, her father is portrayed as a flirtatious and lascivious man who often makes unwanted advances toward young women, including Masato's stepsister, Elisa, much to the dismay of his family and others.

The character development for Magalie is subtle, as much of the series focuses on Masato's internal struggle. She remains a consistent figure of idealized femininity and romantic interest. The central development she is involved in is the gradual deepening of her relationship with Masato, progressing from initial attraction to a more established, though perpetually challenged, romantic connection. She is largely unaware of the full extent of Masato's conflicted feelings for his stepsister, which puts her in a position of innocence regarding the story's core dramatic irony. Her journey is intertwined with the will-they-won't-they dynamic that defines her relationship with the protagonist. As for notable abilities, Magalie possesses no special skills or superhuman abilities. Her strengths are her kindness, patience, and her status as the object of Masato's sincere affection, which serves as a primary motivation for his actions throughout the series.