One Piece Manga Chapter 70

After arriving at Arlong Park, Usopp and Johnny tie up a reckless Zoro and go to find the Going Merry. They find the boat but flee from three fish-men, leaving Zoro behind. Later, they find a devastated village, and Usopp tries to bravely defend a boy and a woman, Nojiko, from a fish-man, but Nojiko knocks him out. Usopp wakes up to find that Nojiko and Nami are adopted sisters, and that Nami is an officer of the Arlong Pirates.