Someone has the save in the fat boss of the cave?
Are you talking about the early boss? I can provide a save at that point, but you'll be overleveled and already far ahead of that point in the game. You can always go back and re-fight the older bosses, too, if you have a save that's past that point and are thinking you can't go back. I went ahead and attached a save that's before the boss room, though I apologize for not seeing this sooner and replying nearly nine days later, so odds are you won't need it.
On another note, does anyone else ever like to mess around with files and try their hand at editing some of the graphics and scenes? I've been doing that with a quite a few RPGMaker games lately, mostly out of boredom and lack of interest in most current releases, and I appreciate how easy it is to make the heroine fully naked in this one if you want (because as far as I can tell, you can't do that through an in-game option in this one yet). It's easy to get rid of the extra effects like semen and mud, too, if it gets to be too much for you. Take this, for example:
Though I know many enjoy the original material more, it's fun to see what you can do. Rambling aside, here's that save before the fat boss.