I want to start by saying that I found the concept interesting and the circus characters creepy and disturbing (in a good way), I understand this is a work in progress but would love to have seen more of them and the circus.
It was very easy to spot the big influence of Undertale (it's a very big inspiration for me too), but at some point it stopped feeling like the game that had nods to Undertale and more of a "fangame" with too many references like the save points which felt a bit out of place with everything else.
I believe you have a lot of original concepts and visuals to make it stand out without the need of getting so much inspiration from Undertale, the circus creatures are so cool, the protagonist is very cute and most of the hambiances were very creepy even if nothing happened.
Also I don't know if it's a bug but I couldn't make the menu work, and the save points did nothing when I tried interacting with them, I don't know if it's more of an auto save thing.
If you go back to fully develop it I'll be sure to check it out again!