This is not great.
There are some game-over-rape scenes, for some (but not all) of the bosses. Even the final boss has no 'bad end' scenes. It has clothing damage, which is nice, but it only goes down to 'ragged'. It has some debug-cheat damage setting for 'Ember' that makes all battles a walkover. The gameplay is weird.
Protip: Get as much money as you can before using the Music Box - it can only be used once - then buy a ton of MP boost items. You won't need anything else.
It is a 'choose your route' thing the direction you go determines which two sisters of the seven available will be with you at the end. Which means basically nothing. The only real significance is that it also determines which sister you get to see in a couple of game over rape scenes. There is no gallery, so you don't get to see any bad end scenes that you missed (by beating the monsters first time).