Side Mission 106 in Pokemon Legends: Z-A(Klefki's Lost Key) cannot be started until after you reach Rank A in the Z-A Royale, but it'll involve you having to find a lost key for a Pokemon trainer ...

Lost Keys is a Mystery you can find in Hell Is Us. A Mystery is a side quest tied to an Exploration Item that you have the opportunity to see while investigating the side paths of the world. When you ...