Board Thread:Naruto Discussions/@comment-12509038-20140806073433/@comment-3568954-20140806114531

Jashin Uchiha wrote: ItachiWasAHero wrote: Obito had his own Chakra and Hashirama's chakra, so of course Kakashi was able to get a make-shift EMS from that. He now has Perfect Susanoo and both Mangekyo Mastered and I will put this on the line right now, he can now turn them on and off and they now only drain him like they would drain a normal Uchiha. Kakashi is a mother****** BEAST.

Except they had no drain on an Uchiha.

yes they do. all ninjutsu drain chakra over time. thats why it drained him of chakra because they were always on therefore chakra was always being used even when he sleeps