Yayoi Takatsuki, a 13-year-old idol with 765 Production, radiates relentless energy and optimism, her hyperactivity masking the weight of familial struggles. Her father’s erratic employment strains their finances, forcing her to wear worn, outdated outfits and juggle idol duties with cleaning tasks and odd jobs at the agency to support her family. As the eldest of five siblings, she shoulders cooking, chores, and childcare, privately longing for an older brother’s guidance.

Though academically challenged due to prioritizing part-time work and idol activities, Yayoi practices strict frugality, agonizing over even trivial expenses and occasionally borrowing from the Producer. She sacrifices personal comforts to ensure her siblings are fed and sheltered, often sharing meals and sleeping quarters.

Her close bond with Iori Minase thrives despite their differing upbringings, their friendship rooted in mutual admiration. While typically cheerful, Yayoi reveals unexpected ferocity when provoked, though she treads cautiously around authority. A fear of heights contrasts her arm-wrestling prowess and sharp eyesight. Her hobbies—strategic Othello matches, baseball, tending vegetables, and scavenging vending machines for forgotten coins—reflect her practicality and playful spirit.

Media portrayals consistently highlight her familial devotion and relentless work ethic. Spin-offs feature her whisking Iori to a deserted island and bonding with her puchidol counterpart, Yayo, a miniature dynamo drawn to clinking coins. A 2022 narrative milestone appoints her tourism ambassador for Takatsuki City, celebrating her local fame. Resourceful cooking with sparse ingredients and steadfast sibling care remain central themes, echoed in prequel OVAs that depict her younger self unchanged beyond age.