Sumika Fujimiya is Takafumi Takaoka's childhood friend. Her appearance changed dramatically from childhood to adulthood. In elementary school, she looked like an unattractive boy with distorted facial features and Tombody Teeth. As an adult, she possesses an attractive figure with shoulder-length black hair (purple-tinged in the anime), brown eyes, an ample bosom, and long legs. She typically dresses conservatively in subdued colors like mauve and pink, finding even a one-piece bathing suit photo too revealing. Personality-wise, Fujimiya evolved significantly. As a child, she was violent and actively bullied others, including Takafumi, though he didn't recognize it as bullying then. She delusionally recalled herself as a shy, pretty girl, a misconception that later caused her profound shame when magical memories revealed her true past behavior. As an adult, she is generally level-headed, often acting as the straight woman counterbalancing Takafumi and Yousuke Shibazaki's eccentricities. Despite her composed exterior, she demonstrates a covertly mature interest in sexual content, such as requesting memory spirits not to censor potential intimate moments from Yousuke's otherworldly adventures. Fujimiya harbors complex, unrequited romantic feelings for Takafumi. She frequently makes overt or subtle advances, which he deliberately misinterprets or ignores to preserve their friendship and avoid complications, causing her visible frustration. This persistence contrasts with her childhood role as his bully, though she also defended him from others, creating a bully-turned-buddy dynamic Takafumi recalls with unexpected fondness for its protective aspects. She has a younger brother, Chiaki Fujimiya, whose spiky red hair and resemblance to her childhood self embarrass her about her past appearance. In the present timeline, Fujimiya reunites with Takafumi after years apart and joins him in viewing Yousuke's magical memory replays. She exhibits pragmatic concern for Takafumi's well-being, observing his strong escapist tendencies stem from an unhappy childhood. She participates in comedic situations arising from Yousuke's magic, like when Takafumi transforms into the female Alicia, showing more comfort with risqué scenarios than Takafumi. Her potential bisexuality is suggested through attraction to women, such as Yousuke's female form (Sui) and expressed interest in viewing women's bathroom scenes via memory spirits.