Mai Tadakusa, a 16-year-old first-year student at Tagane High School, thrives as an enthusiastic member of the Photography Club. Her passion lies in candidly photographing Monaka Yatogame, whose shy resistance she finds irresistibly charming—a fixation that earns Mai the playful "otaku" label from Monaka. Mai counters this by embracing her wide-ranging appreciation for cuteness, from anime personas to pop idols, framing it as a celebration of aesthetics rather than niche obsession.

When recruiting Kaito Jin into the club, she enlists Recchiri-sensei’s aid, showcasing her resourcefulness. Her cheerful persistence in coaxing Monaka out of her shell and engaging peers highlights her role as a mediator, softening Monaka’s guarded nature to foster camaraderie within club activities. Hailing from Gifu Prefecture, her dialogue occasionally reflects regional cultural nuances, though her personal history and family remain undefined.

Consistently portrayed as a spirited supporter of both photography and her friends, Mai’s narrative arc prioritizes lighthearted cultural observations and club dynamics over deeper personal evolution, anchoring her as a steady, upbeat presence tied to her photographic pursuits.