Maria Imari is a 14-year-old transfer student entering Tsukimori Middle School as a second-year. She possesses waist-length orange hair typically styled in buns on each side of her head and blue eyes, traits contributing to her immediate popularity among male students. Maria exhibits a cheerful and curious personality with a strong interest in manga and anime. This shared otaku passion leads to a rapid friendship with Subaru Uchimaki, sparked when Maria recognizes his pose referencing the anime *Black Dragon Eye*. She later playfully asks Subaru if he wants to date her, inadvertently creating tension with Mizuki Usami. Maria displays *chuunibyo* tendencies, including wearing a medical eyepatch and inventing personas such as the "Evil Grimoire Exploration Society," reflecting her immersion in fantasy narratives.

Serving as president of the school's Manga Club underscores her dedication to otaku culture. Initially perceived as a potential rival to Mizuki Usami due to Mizuki's jealousy over Maria's connection with Subaru, their relationship gradually evolves into friendship. Maria views Mizuki as a "cute good girl" and reliable companion despite occasional friction. Her interactions with Art Club members Subaru and Mizuki fuel comedic and dramatic scenarios. For example, her presence during a phone strap shopping trip leaves Mizuki feeling like a third wheel, and her direct questions about Mizuki and Subaru's relationship status intensify Mizuki's internal conflicts, highlighting Maria's unintentional role as a catalyst for interpersonal tension.