学園物語

Not to be confused with Gakuen Monogatari ~Ikenai Houkago~ by Peach Soft.

Hero enters a well-known private high school and falls in love with his English class school teacher Norico at the first sight. One day a Noriko-sensei is suddenly expelled, apparently on the reason that she is intimidated by someone. The hero launches investigation to get to the source of it.