One Piece Chapter 22, page 24: YOU ARE A RARE AND PRECIOUS ANIMAL TOO

Nami continues to yell at Luffy to drop the chests, but Luffy stubbornly refuses. Gaimon, looking up with tears in his eyes, tells Nami to let it go. He realizes that Luffy is a good person who is trying to spare his feelings. Gaimon admits that deep down, he always suspected the truth but tried hard not to think about it.