As leader of her middle‑school science club, it is natural that Ueno excels as an inventor. Her gadgets can turn any liquid into potable water, neutralize the worst odors, or even produce dark matter for concealment, making it seem that nothing lies beyond her reach. Yet she does not create these tools to benefit humanity; the sole driver behind her work is love, a mystery she cannot yet solve. Her laboratory is cluttered with prototypes, each more ambitious than the last.
Ueno is utterly enamored with Tanaka, the easy‑going clubmate. Because she feels too shy to admit her feelings and he is oblivious to her affection, their romance remains at a standstill. She believes that if she could simply place him in scandalous scenarios, he would become flustered and fall for her. She hopes that his reaction will finally break the silence. With the help of her stoic classmate and loyal wingwoman Yamashita, Ueno uses her inventions on Tanaka in a provocative way, hoping that one day he will understand her emotions.
