This was a neat game, I'm just playing now after the Racial Equity bundle. The Undertale influence is pretty clear, taking the conventions of a known genre and using the mechanics themselves to tell part of the story.
I did find the language used in the afterlife to veer a little close to glorifying suicide for my comfort. Still, I'm reminded of a short story which took the idea that every human life is a reincarnation of the same being, that from an outside context will have experienced every interaction in history from both sides.
I had some frustrations with the RpgMaker format; random encounters made backtracking annoying, and I found the text boxes progressed slowly with multiple hard breaks (I always set text speed to 'instant' if available). Visual novel tools would've been really nice, especially a Skip Read option (and ideally a History option for when a text box flies past due to thinking the scene was over). Toggling encounters would've been nice, like the Repel in pokémon. Other suggestions with spoilers below...
I wasn't quite stuck, but had a bad time for a while due to the Hot Potato. In the Kitchen, at some point there's a Block Rock which prevents you from walking back to the entrance unless you have the Hot Potato page, which is only possible if you have a curiosity from outside the mansion (which was on the one screen of the external island which I hadn't noticed before going to the mansion). This doesn't lock the game, but combined with the basement being mysteriously blocked off at some point, the only way out was through the back along a long and winding path with encounters every few steps. This was particularly frustrating as the same area gives access to ice cream which specifically mentions cooling down, which feels like it should work. If you ever do a quality-of-life tweaking pass, I recommend shifting that required page to the Breezy Freezie, and perhaps double-checking that there aren't any other Block Rocks which check for pages which need items behind them.
Block Rock gates in general could have really used more hints. My first mansion access was through Wiz's quest, and after finally gaining a foothold past the fence, I couldn't pass one narrow hallway before being presented with an unsolvable encounter. Fortunately the comment here about needing to solve other encounters first was enough to unblock.