Jun Shiomi is one of the lecturers in Totsuki Culinary Academy as well as the professor of the Shiomi Seminar. A bookworm who has intensive knowledge of herbs and spices, Jun is an expert on the science of spices and their effects on cooking. Once she enters "lecture mode", she will solely focus on her lecture and will not notice anything else. While she has the educational knowledge, it is her assistant, Akira Hayama, who puts that knowledge into practice. Similar to Megumi, Jun is extremely polite, has low self-esteem, and constantly apologizes for her actions. Despite being a lecturer in the academy, she is often scolded by Akira for her many faults such as sleeping on the ground or forgetting to care for the various spice plants in their vicinity, since most of her chores and duties are being taken care of by Akira. Regardless, Jun has confidence in Akira's abilities and mastery of spices even though she is sometimes livid about some of Akira's crude jokes. Being one of Polar Star residents during the dorm's Golden Era, Jun knew both Gin Dojima and Joichiro Yukihira during her time. Unfortunately, Jun is more hostile towards the latter as Joichiro used her as a guinea pig for many of his failed dishes, many of which left her emotionally scarred, creating a grudge against him.