The player becomes a young man in love with a princess and attempts to deliver a love letter to her. The love letter is carried by various collaborators (cards) of different statuses who serve the castle. They not only take care of the love letter, but also have effects that influence you and other players as collaborators. However, you must avoid actions that would allow other players to guess who your collaborators are. This is because other players will try to have their collaborators steal the love letter from your collaborators and eliminate you from the game. Players can only hold one card at a time. The player who skillfully selects these cards and successfully entrusts the love letter to the princess, or the person closest to the princess, wins.