There's possibly a bug (or some kind of error I'm not aware of that I did) where after I beat the game once and got to the 'ending' again, it didn't let me hit Z to continue the dialogue and no matter how long I waited or hit Z it'd not proceed through the last dialogue. Either that or it was because I was hitting Z too fast/too many times. I had to refresh the browser to reset and it didn't happen again.