Wow! I haven't seen an HTML + js game in a long time. For me, this was a pearl, that's the main reason you didn't had the time to finish it, but it's large enough to let you thinking: I want more of this game. Story, background and characters are pretty interesting. And, even when I really love the way it is working, if I am allowed, I would recommend you to jump to a visual novel editor in order that you work faster on the programming and focus on developing the story.
Congratulations!