The game is set at Seitei Gakuen, an elite private academy that teaches every level from kindergarten until college in Tokyo. Minami Yuuri is starting her second year of teaching here, and she is now moving up from teaching middle school students to the assignment she had sought after: grammar for high school students. Unfortunately, she gets assigned to "Class X," an infamous group of seniors; it is said that all of their previous teachers have retired due to ulcers or neurosis. Minami must try to reach out to these students and get them into college. [From [url=http://www.animenewsnetwork.com/news/2010-09-13/vitaminx-dating-simulation-game-gets-ova-project]ANN[/url]]

The boys are about to graduate, but suddenly, they decide to take a 3 months holiday! Manami will have to handle the situation and assure the boys' graduation goes as planned.

In the middle of the events of the two original games, both classes decide to take a break and go to a winter resort. Manami and Yuri will relax in the hot springs while they get closer to the guys.