I'm just a bit curious about these chains and how they are used so I'm just going to throw some ideas I have about them
1. Maybe only pure uzumakis can activate these
2. Perhaps once you stored enough hate/rage you can unleash the chains
Proof:
For number one it's quite easy to say why Naruto can't use the chains since he isn't a pure uzumaki
For number two we saw that Kushina was always hating people when she was young and started storing the rage somewhere or also she took in some of Kuramas hatred and for Karin we always saw her show hatred towards suigetsu and sasuke at times.
This is just a idea until we actually learn more about the chakra chains
1. Maybe only pure uzumakis can activate these
2. Perhaps once you stored enough hate/rage you can unleash the chains
Proof:
For number one it's quite easy to say why Naruto can't use the chains since he isn't a pure uzumaki
For number two we saw that Kushina was always hating people when she was young and started storing the rage somewhere or also she took in some of Kuramas hatred and for Karin we always saw her show hatred towards suigetsu and sasuke at times.
This is just a idea until we actually learn more about the chakra chains