Very good! Until I checked the comments, I had no clue how I could get a different ending.
The only complaint I have about this game is how the endings aren't satisfying... I like the fluff and extra details when you play through a new route. But even an "unsatisfying" ending makes sense, because this is a prologue! I haven't played Paper Lily yet, so I can't wait to see how the games connect.
I like the art style a lot, and the writing is good too! The game vaguely reminds me of Corpse Party! (there's some gore, haunted school, and yk the whole failed ritual things.)