This game is interesting, there's not a ton of good Adventure Time h-games out there.
The art is pretty promising, although I did notice that some things that are supposed to be yellow, like PB's crown or Abracadaniel's banana, are green instead for some reason.
I'd say the main problem right now is the formatting. It's sort of all over the place in terms of capitalization and punctuation, and there isn't demarcation between when a character is speaking aloud and when they're thinking to themselves. The writing itself is passable, if a bit flat, but the formatting gives the whole thing an "amateur" vibe.