Board Thread:Naruto Discussions/@comment-24898250-20140730025315/@comment-5407586-20140805202220

AsianReaper wrote: Well, Naruto has never been good with chakra control, so he wasted energy while using the technique. I think Kakashi could handle it, with his expert chakra control Rasengan doesn't waste chakra. All the chakra used for the technique is conveyed in the sphere. That's why it doesn't require hand seals, despite it being extremely difficult.