Chihiro Miura attends high school as part of Mayu Morita's circle of friends. She visibly lights up while enjoying sweets, particularly parfaits and strawberry shortcake. Miura harbors a quiet crush on her classmate, Ritsuki Yamamoto, which colors some of her interactions. She frequently teases her friend Miki Murakoshi, making blunt remarks about Miki's weight or dismissing her ideas as frivolous. This tendency includes making insensitive comments on topics like broken homes, remarks which prompt Hana Matsuzaka to quietly indicate the situation reflects her own home life. Miura actively participates in group activities with her friends, such as baking cakes, attending sleepovers, visiting the library, and helping teachers with classroom tasks. These shared experiences maintain her social bonds despite her occasionally sharp tongue. A notably cute moment captures her riding a toy dolphin.