Would someone like to elaborate about the phrasing in that last sentence? I know what Kaian is but I didn't really understand what she meant (The real Kaian or the Gensokyo one) and what the phrase at all means.
However...
There's actually something you need to do yourself.
May all your dreams
be of Kaian...
Now then. Good night.
There's a person, of whom only one can exist...
"An outcast."