Raika Meiki is a student in class 1-3 at Inspiration Academy Private High School, an institution dedicated to educating geniuses, where she herself is recognized as a genius photographer. Her name, derived from the Leica camera brand, reflects this photographic expertise. She works with Taketo Akutagawa as a member of the school's Newspaper Circle, contributing her photography skills to their publication.

The core of Raika's character is her persistent pursuit of capturing embarrassing photographs of Taketo. She frequently follows him, seeking opportunities to photograph him in compromising or awkward situations, considering him her most useful model due to his tendency to find himself in such circumstances. To secure these shots, she actively engineers scenarios that place him in difficult or humiliating positions, intervening directly or indirectly. She justifies this by claiming these photos are necessary for her work, stating that other forms of photography elude her; she only succeeds in capturing embarrassing images.

Despite openly expressing disgust towards Taketo's habits and assigning him numerous derogatory nicknames, Raika exhibits complex feelings. She stated that they are both "ugly creatures" and would make a good match, indicating a level of acceptance and potential romantic interest. She does not object to Taketo having perverted thoughts about her and has shown disappointment when he does not react to her in that manner. Her assistance to Taketo during challenging situations, while framed as a means to maintain access to him as a photographic subject, also hints at deeper motivations tied to these feelings.

Physically, Raika possesses light pink hair and blue eyes. She is typically seen wearing the school uniform and often accessorizes with a hairclip. Her role is consistently defined by her interactions with Taketo within the school setting and her contributions to the Newspaper Circle.