Who am I?

Who am I? Am I the protagonist? Or am I her friend? Or maybe even worse, the antagonist?! Mei questions herself everyday as she struggles to find out the truth. Who am I? Is a virtual reality game developed by V. Corp, it's a game where you play as a character in a novel, you will also have to do missions in order to win the game, at first the game will tell you who your character is and who you are playing with, some actually got lucky and got to be chosen as one of the protagonist. The game only allows 6 players in one novel, so the 6 players will have to beat all the missions together. But in Mei's case it's different, the game didn't tell her who her character is and who are the other players, but all she knows is that she's a maid working for one of the character protagonist in the novel, Owen Chester.