Personally , I enjoyed them . It gave Kabuto more development . Orochimaru being there made it more intersting . His past was pretty sad yet nice , and Kishimoto did a good job telling us his works as a spy , then joining Orochimaru . But my problem is that , people keep saying that some Naruto characters have not enough development . In this case Kabuto . We particularly did not know anything about him , only him being a spy and being a ally with Orochimaru . But then , Kishimoto gave him a 3 chapter flashback to give him more development , and yet people say that they were pointless . 