Hiro  

, ヒロ

Yuno and Miyako are 16 years old in the anime series Hidamari Sketch-365. In contrast, Hiro is 17 years old, which makes her one year older than her two friends. She resides directly beneath Yunos apartment and serves as a supportive senpai to the girls despite being concerned about her own weight. As a result, she frequently embarks on diets but also indulges in sweets from time to time. Hiro is Sae's childhood friend and plays an important role in supporting her during crises or when facing deadlines.