Is it possible for players to add custom words and their adjacent equivalents?

I noticed that most of the dialogues are all informal like anime-ish.

Was kind of hesitant to pay $20, but the demo sold me. Thanks a lot! Hope you make more some day :0

Is there any plan to ad Katakana and Kanji into this game down the line? I'm guessing that would be enough work that you might wait till your next game. But it would be an amazing feature that would make this even better for studying! It could even be a DLC option. Or something that toggles on and off. Id definitely pay extra to download it....

I am playing the demo and am in the cave with the bats, etc. How do I leave the cave? I went all the way to the end and killed all the ghosts in my path. I did not, however, pass all the HP challenges. Is that what I need to do to leave? Because I am finding it very difficult....