Talk:Keefe and Sophie/@comment-35871510-20180715033851/@comment-2605:6001:E5D6:8900:B9EE:CE92:7782:C88B-20180716142932

Keeper is another form of saying protector or gaurdian, like what Suldreen wrote. In this case, MS is saying that Sophie is the protector of the lost cities. It's Sophie's task to protect them and keep them safe. In fact MS wasn't alone at naming the series, she got help from girls that were having a sleepover. I remember gearing this from a video, though I'm not sure from which one.