The Sell Card system allows you to sell cards you no longer need and, in return, obtain materials for card enhancement.

Upon selling cards, you will receive two types of in-game currency: [Memory Charm] and [Memory Catcher].

You can exchange these resources for various items, including ""EXP Cards"" and ""Rhythm Cubes,"" at the [Item Exchange].

Make use of this system to maximize the growth of your cards!