Board Thread:Naruto Discussions/@comment-33485854-20180907234534/@comment-30323490-20180908143522

Kurama also grants the ability to sense negative emotions. Maybe kcm2 is actually a combination of Naruto’s chakra and Kurama’s while ntcm/kcm is just Naruto using Kurama’s chakra.

The reason behind the 2 versions is clear. NTCM is the usage of chakra that Naruto stole from Kurama while KCM2 is Naruto cooperating with Kurama. What this cooperation means is up to debate.