Luffy didn't assist cause it was their right to start the fight. And Luffy still went and fought and beat kaido too.
Will Coby in any way be able to help Garp against Aokiji? No chance lol.
Seastone handcuffs are just your copium for Coby not being able to even break normal handcuffs lol.
Coby isn't significant to the current plot is my point. He was the arc princess to start the plot. But he is not gonna be in the fight. Just like any arc princess.
Do you think Coby won't escape? He will. And garp either gets captured or killed. So cobys involvement in the arc will have been getting captured and getting rescued. Nothing more.
Other characters are the people that moves the plot forward. Not Coby.
If Coby was strong enough to fight BB with Luffy, or even a commander of BB, then he would have been able to escape on his own. Not be released by perona lmao.
If perona hadn't come, Coby would still be imprisoned. That's not a character whose gonna fight BB or Aokiji lmao.
1. He didn't assist because oda wrote it so.
2. Arc princess in onepiece are not captured. Rebecca could have left but her country was f'ed up, vivi could have left but her country was f'ed up. Shirahoshi had to stay inside her room but was never captured. So the whole princess are capture in onepiece is bull
3. Koby will escape, garp will die or be captured because of koby, it sets up koby vs aoikiji or vs bb with luffu to replicate garp and rodger vs xebec. It ain't difficult to comprehend.
4. Actually the prisoners confirmed that koby could have escaped if he wasn't also trying to free everyone