Kind of a mix of Princess Maker and anime novel-games, with RPG elements.
As a school girl at a magical school you get to decide what to do every day. Go to class, go study, go sleep or go to gym. Plenty of events show up where you can make additional decisions, some with quite interesting results. You decide which magic disciplines you will improve at, each having their own strengths. Some magic spells might be more useful than others for certain challenges you'll face.
You'll interact with the other students around school, where some try to be interesting or just mysterious. There's some highlights in the conversations, and some lines are loaded with sexual innuendo, especially when taken out of context. Which is, likely, very much so the intention of the author.
So far the game's amused me and it's easy to go play for a few hours nonstop just advancing the story and thinking of what your next step will be. It's just silly fun.
Definitely one of the weirder adventures around. Weird in a good way. Inadvertently killing people left and right. Getting hypnotized to not be able to do certain things, which you try to overcome. And all with utterly good intentions. Kind of. The plot slowly unravels. I wonder how many people will be alive at the end.