"Bungaku Shōjo Memoir III - Koi Suru Otome no Rhapsody" is the third installment in the "Bungaku Shōjo" OVA series, based on the light novel series by Mizuki Nomura. The story centers on Tōko Amano, a high school girl who is a "literature girl" with the unique ability to consume pages of books as food. She is part of the school's literary club alongside her close friend Konoha Inoue, a reserved and introspective boy who writes stories under the pseudonym Miu Inoue. The narrative explores themes of love, identity, and the transformative power of literature.

The plot unfolds as Konoha becomes entangled in the lives of two girls: Nanase Kotobuki, a cheerful and outgoing classmate, and Miu Asakura, a mysterious and emotionally fragile girl who shares a deep connection with Konoha through his writing. Miu, who is revealed to be the inspiration for Konoha's stories, struggles with her feelings of inadequacy and her desire to be loved. Her emotional turmoil is exacerbated by her perception of Konoha's growing closeness to Nanase, leading to a series of misunderstandings and conflicts.

As the story progresses, Konoha is forced to confront his own feelings and the consequences of his actions. His relationship with Tōko, who serves as a stabilizing force in his life, is tested as he navigates the complexities of his emotions toward both Miu and Nanase. The narrative delves into the psychological struggles of the characters, particularly Miu, whose obsession with Konoha's stories reflects her longing for validation and connection.

The OVA maintains a focus on the interplay between reality and fiction, as the characters' lives are deeply influenced by the stories they create and consume. Tōko's role as a "literature girl" serves as a metaphor for the transformative power of literature, highlighting how stories can shape and reflect the inner lives of individuals. The resolution of the story emphasizes the importance of self-acceptance and the courage to face one's emotions, as the characters come to terms with their identities and relationships.

Overall, "Bungaku Shōjo Memoir III - Koi Suru Otome no Rhapsody" is a poignant exploration of love, identity, and the impact of literature on human emotions, presented through the intertwined lives of its central characters.