I read that you are looking for ideas for the game or something I just wanted to say my opinion, could you add more monsters or something like bees or something You can also add explorations such as searching for important objects. Monsters could be Bee of Honey /snowmen or scorpions something similar to bats It wouldn't be bad even though there are a lot of ideas.
How did I see that it ended up here? I think I could take advantage of it by adding honey bee. You could also add other things. It could also be inspired by other games like Shinobi girl or Parasite in city in monsters and then if you want story ideas I think it could be explorations like looking for important objects or something to use, just thought about ideas