Hiromi Masuoka is a friend of Saku's and Koyuki's and attends the same high school. She used to work at a donut shop near the restaurant where Koyuki was working part-time.
Personality
Hiromi is kind-hearted, but a bit scatter-brained. Koyuki starts giving her tips on how to play the guitar.
Trivia
- In the manga, she became Saku's girlfriend without Koyuki's knowledge or even noticing it. He was surprised when Saku told him.
- In the anime, it is also hinted that she became Saku's girlfriend too.