It is not really mysterious. I would use the words deranged and psychotic to describe this piece. Particularly the school bits. It is entertaining in places.
Spoilers follow:
This game follows the life of Yuu Asakura over two days. There is not that much in the way of plot or character development. It is just a series of events each with either a good or bad final outcome for the protagonist.
Some have complained that the protagonist is another idiotic blank slate and with many visual novels and anime I frequently make this complaint to. In this case I digress, this game could only wo