One piece : Card pickup system

In a world where pirates roam the seas and unimaginable adventures unfold, Luen activates the Card Pickup System, a unique ability that allows him to collect attribute cards dropped by others. The stronger the person, the higher the quality of the card they drop. This power opens up new possibilities for him, but it also leaves him with a tough decision. Luen contemplates his options: should he join the Marines? No, the rules would be too restrictive. What about Kaido’s crew? Or Charlotte's pirates? Perhaps Whitebeard's? The first two choices were far too dangerous, and as for Whitebeard’s crew—Luen had no intention of calling anyone "father." So, after much thought, Luen decides to join the Red-Haired Pirates as an intern. Shanks, the captain of the Red-Haired Pirates, reflects on the bizarre turn of events: “I never would have imagined that, after all these years, with Mihawk unable to defeat me, Kaido unable to defeat me, and even Whitebeard only being able to draw with me, it would be an intern on my ship who would defeat me!” Meanwhile, Sengoku, the former Fleet Admiral of the Marines, remarks: "It is well-known that the most terrifying person on the Red-Haired Pirates’ ship is none other than an inconspicuous intern!" Thus, Luen’s journey takes an unexpected and thrilling turn as he rises through the ranks, his power and potential known to only a few, but growing stronger with each passing day.