There is Black and white impermanence in Chinese ancient story. In charge of the soul. Now here is a game that is similar to them. Dark Master and Lightmaiden is a cooperative two-person game, you can control dark Master and Lightmaiden. This method is special, but you also will be confused sometimes when you control them sometimes. The two characters must work together to solve puzzles and overcome obstacles at each level. They must collect all the souls,the gates will open. Attention, they can only stand on the pools which have the same color.