Junko Harumi was once a model student during her middle school and high school days. However, she, unfortunately, failed to enter the prestigious Tokyo University, and her life has not gone smoothly since then. Now, at the age of 32, she works as a teacher in a private tutoring institute, hoping to help other high school students succeed where she has failed in getting into their university of choice. She was not having much success until one day, a high schooler with bright pink hair and his father enter the institute. The father believes his son is a delinquent and wants the institute to help him enter a good university. Junko decides to take on the challenge. Will she be able to succeed, and will she be able to also finally have a romance when 2 other men appear in her life?