A circular story is rare since most of people awaits a linear story. It means you start a revolution in the way to do visual novels. One thumb up.
Before digging further, things are good with most of the story intrigue. also, each transition between parts of the story flows perfectly. Even grammar is irreprochable. One thumb + three thumbs up (don't mind about the hyperbole I do on the expression "Thumbs up". Just think that one good point + three good points = excellent).
The only thing I can't put my finger on is the changes of place and their fuzzy link in the intrigue. Of course, confusion leads to interpretation, so the reader can fill the holes with his own imagination. I want you to be honest : did you really wanted that, or did you think the readers could take it all without any interpretation? Just keep in mind my question isn't an opportunity to blast you : I need answers to make a complete critic on your work.
I'll wait your answer. Sincerely,