This is an adventure/RPG game where you play a school girl who has received an anonymous love letter, and must talk to various people around the school to try and discover who sent it. Although it has a top-down 2D board like many RPGs of the time, it consists almost entirely of just talking to people in the correct order. The school is quite large, although the game is nice enough to limit you to certain areas at a time, so you don't waste time backtracking pointlessly. Escape brings up the menu, and it includes a save feature. Shift enables you to run.
For whatever reason, it appears Anex86 will freeze when you get to the section where you sleep, so you may want to use another emulator for this one.