The happiest thing about sailing was naturally being together with one's companions. Most of the Shichibukai, however, seemed to operate alone.
That was not entirely true. Once pirates reached a certain level, they would all stop moving forward. The world was only so big. They could travel across it, but there was no need to.
Especially after entering the New World, they would basically stagnate, because they had come into contact with deeper things and understood even more clearly how to walk the so-called path to becoming the One Piece.
The Four Emperors were forever the highest peak that pirates of this era could reach, as well as their goal.
Rogge and the others had naturally not reached that level yet. The world was still vast to them. Rogge wanted to continue adventuring rather than stay in one place constantly collecting sons or something like that.
St. Poplar Island might be unfamiliar to some people, but it truly existed in the manga. It appeared in the cover stories, and was not far from Enies Lobby and Water 7.
The defeated CP9 members in the cover story had drifted to "Spring Queen Town, St. Poplar Island." After Lucci and the others were defeated, the CP9 members feared that Spandam would eliminate them. Bruno, using the Door-Door Fruit, opened an air door and rescued everyone.
Because Lucci's injuries were the most serious, they stayed on St. Poplar Island. In town, they helped the residents clean the streets, performed their talents, and played with the children. After Lucci's injuries healed, they left St. Poplar Island and returned to their homeland, where they encountered the Marines and the new CP9 led by Spandam. Those newcomers were defeated by Lucci and the others.
In this way, Lucci and the others once again demonstrated themselves. They