![](https://cdn.animecharacters.io/images/characters/large/18400-49d9068f.jpg)
Hiromi Masuoka ()
Hiromi Masuoka is a student at the Ichieda Gakuen Private High School attended by Koyuki, Saku, and Chiba. She also worked for a period in a doughnut shop next to Koyuki's, the Seiryuu restaurant. She is a friend of Koyuki and Saku.