One Piece: Intern on a Red-haired Ship

Once crossing the pirates, Lu En activated the card pickup system, and he could pick up attribute cards dropped from others. The stronger the cards, the higher the level of cards dropped!
So Lu En began to think.
Into the navy?No, too many constraints!
Infiltrating Kaido's pirate group?Charlotte?Or Whitebeard?
The first two are too dangerous, and the latter, Lu En has no plans to recognize his father.
So... Lu En decided to join the red-haired ship and become an intern!
Redhead: "I never dreamed that Hawkeye couldn't beat me over the years, Kaido couldn't beat me, and even Whitebeard could only be tied with me, and he would be beaten by an intern on the ship!"
Warring States: "As we all know, the most terrifying thing on the red-haired ship is an inconspicuous intern!"