My Cards Are All High Quality

This is a world full of soul power. Soul masters rely on their unique soul boxes to summon cards with magical abilities: attack, shield defense, forging, enchanting, tailoring, cooking, and more. Su Mu, who came through soul travel, was originally a soul master with an ordinary quality soul box, but he found that he had one more soul box than others, and it was of legendary quality. From then on, his life was like a mess. "Okay, let's show our cards. I, Su Mu, am invincible!"