Keiko Inamura thrives as a spirited high school student and classmate of Yume Kuonji, completing a trio with Mi through their shared involvement in the track and field team. Nicknamed Kei by her peers, she navigates a dynamic friendship marked by Yume’s frequent daydreams and Mi’s social hesitations, often steering their group through lighthearted friction. Her routine balances academic duties with shifts at a local restaurant, where she works part-time as a waitress.

Keiko’s sharp grey tsurime eyes and pale complexion contrast her dark brown, middle-parted short hair. She typically wears her school uniform but occasionally dons a Chinese dress paired with knee-high socks, blending playful flair with practicality. Though her short temper and tomboyish energy define her demeanor, she displays unwavering patience in handling her friends’ quirks, anchoring their camaraderie amid everyday school life.