Shiomi is a 74th Generation Toutsuki Academy Alumnus and a former resident of the Polar Star Dormitory. She is one of the lecturers in Tootsuki Culinary Academy as well as the professor of the Shiomi Seminar. Shiomi Jun is leagal guardian of Hayama Akira.

Jun is the youngest lecturer in the academy, but is actually older than she physically appears. Despite the fact that she in her 30s, she is shorter than both Souma and Megumi and has a noticeably youthful face, causing both Souma and Megumi to mistake her as a middle school student of the academy.