One Piece Chapter 41, page 12-13: To the Sea

Luffy looks down at Usopp with a wide, friendly smile and says, "YOU'RE ALREADY OUR COMPANION, AREN'T YOU...?" Usopp freezes in shock, his eyes wide as he stammers, "WHA...." Realizing they want him to join their crew, his face lights up with joy. He runs toward the ship, pointing proudly at himself and shouting, "I... I'M THE CAPTAIN RIGHT!?" Luffy immediately yells back from the deck, "NO WAY! I'M THE CAPTAIN!!" while Kaya and Merry watch them with warm smiles.

From the safety of the bushes, the three young members of the Usopp Pirates—Ninjin, Piiman, and Tamanegi—watch the Going Merry sail away. They talk among themselves: "THERE GOES THE CAPTAIN..." "BUT IF HE'S WITH THOSE PEOPLE..." "I FEEL SAFER." "YEAH, I'VE NEVER SEEN ANYONE SO STRONG." They accept his departure, noting, "WE CAN'T DO ANYTHING ABOUT IT... HE ALWAYS WANTED TO BE A PIRATE." They worry about the village, saying, "THE VILLAGERS WILL BE SAD WHEN WE TELL THEM THE NEWS. IT'S SO SUDDEN... AND IT'S BECAUSE CAPTAIN... HE WAS PRETTY NOISY JUST HIMSELF." Suddenly, Tamanegi gets a bright idea and shouts, "I HAVE AN IDEA!" to which the others ask, "WHAT?