User blog comment:Vremyanova/Speculated Future Servant, Short Introduction, and Their Possible Class/@comment-24050152-20160129143421/@comment-24050152-20160129144217

people were talking about Nightingale appearing in the opening theme, so i knew it was her. Since I knew all the faces of the other servants. The only one left was Nightingale. For Merlin... its probably intuition.