Uhh... I was able to go through the entire game without talking to anyone, except that it froze at the end(which is where I assume a cutscene would have started). Also, I couldn't figure out how to talk to Ochako. :( I clicked on her but it just said the default "This is what I say when I don't have anything else to say" stuff. It won't work for some reason. I also clicked on the carriage, but nothing happened. *shrug*