"karin is so weak" if shes so weak sasuke wouldnt have picked her to be on his team specifically lmfao sit down
In term of fighting power, I agree that Karin is not really strong (lol). But I must say that she is a GREAT healer. She’s smart and you can’t doubt her loyalty toward Sasuke.
Karin survived through constant experiment and abuse by Orochimaru. She handled a group of prisoners on a remote island singlehandedly (clearly showing her leadership skills), and is an excellent tracker. There is more to hurt than meets the eye. There is more to her than just the scars on her body. She may not be physically equipped as Juugo or Sasuke, but she is not weak.
also, this from chapter 663
and she survived being that brutally stabbed due to her own skill.