This allows you to advance the story. You'll need Stamina to proceed on your adventure.
Beginning a Chapter[]
Once you have chosen a Chapter to begin, you will be given the option to select a Helper as a sixth member to bolster your Crew of five. This Helper will come from other players who are near your level.
Both you and the owner of the chosen Helper will gain 10 Friend Points if the reinforcement is a Friend, and 5 Friend Points if the reinforcement is a Guest. You can only earn Friend Points from any particular player once per day.
The Helpers shown are the current active Crew Captains of each listed player. Other players will also be able to add your active Crew Captain in this manner, so it's best that you keep one with useful abilities active if you want them to select your character above others! You can easily check your active Crew Captain on the main Adventure screen. Your Crew's portraits will be displayed on the bottom, with the Crew Captain centered beneath the Log Pose.
If you wish to make any changes to your Crew, you can do so at the Crew menu.
Finishing an area gives you 5 Rainbow Gems or a quest character, such as Roronoa Zoro, and beating a boss gives you 1 Rainbow Gem.