This game was awesome but so dangerous, I more or less played it non stop trying to cut my way through the endings. Finally done and glad its over, really enjoyed the ride but anymore would've been wrong for me. Very refreshing experience and something that could only be done via games.
I'm not sure if I'm ready to recommend it to friends as it feels like a very hardcore experience, its probably as hardcore as it gets. You have to put up with anime art style, verbose text that goes on and on and rather convoluted puzzles and play mechanics but above all, the replay thing is essential yet goes against what people are usually willing to do.
I'm not sure most people would sit through this kind of game, nevermind sit through it enough times to get the full experience, but I'm glad I've done it and glad to have found a collection of like minded people to talk about it with!
That ending - wow, unexpected. If you have like 4 or 5 of the possible endings, I still dont think you're prepared for the final true ending. Definitely play through them all first. Use a guide to figure out how to structure your play after your first/second time.