From what I was able to pick up from getting through most of this game is that there are only 4 levels but then you try to get to the next area after talking to the blond loli and the game will always crash thus preventing you from going past the 4th level (the first two areas have two bosses).
Its impossible to actually do much in the battle when none of the battle text is translated on what does what and you got to guess.
But losing isn't all that bad. You can lose, regain your health while fighting the restraint portion and then continue on sense when you leave the area, everything gets reset anyway. Still, knowing there is a second part of this game that isn't translated and no one wants to do this game is such a huge oof.