One of the reasons for the sudden surge in the card market is that this year marks the 30th anniversary of Pokémon! "Now you can start investing in One Piece." But recently, the rise has been quite aggressive, almost like a wild dog. More and more people around me are starting to play OP, and the few OP cards I bought a few days ago have already increased in value, with some even doubling. Looking at the April data, OP's growth rate is very fast!