Visual novels are often viewed as something that is very niche and uninteresting to the masses. I feel that this game is perfectly acceptable to anybody that enjoys a good story. Although sometimes it is hard to follow, it has lots of characters and a tale that keeps you interested.
As a game, this is pretty simple. Follow the story and sometimes answer questions or send emails. These actions can lead to different endings and it is worth it to try to get all the endings. It gives you a complete picture of the whole story.
I can't really talk too much more about this without spoiling too much. If you have the time to play this and like visual novels, this is a must have. It is really good. I enjoyed it thoroughly.