Ciel x reader ~Between Worlds

It's bad enough that I have to keep a diary but talking to it, oh come on! *sigh* anyway my name is (f/n) and- well I guess I shouldn't say much since "they" can listen to this part. For now all I can say is that I was sent to protect Ciel Phantomhive from a disastrous fate. Though there's a slight problem though. I...