Board Thread:Boruto: Naruto the Movie/@comment-26508646-20150902025453/@comment-26508646-20150906213904

Ajr1218 wrote: I've said it before in a similar thread, but I just don't think the logic behind all these chakra modes' appearance has been thought through. AFAIK The Last's KCM was conceptualized before SPSM was, and Gaiden's chakra mode had no magatama. Hell, the back design on the original Bijuu Mode changed in between chapters. Also, the source of the mode is inconsistent as well. First, it was implied that it was Kurama's hatred-free chakra, then Minato attained it merely as a result of Kurama cooperating with him. Then Asura was shown to have similar chakra, and then that increased the confusion even more.

The way I see it, the forms have been changing mainly due to trying to find a balance between what looks awesome and what's easier to draw/animate. A full-length battered cloak is tough to animate well, and it takes more effort to draw the complex back pattern of the SPSM. Also it's probably easier for animators to flood-fill Naruto's figure with yellow than it is to cut his skin out from the coloring effect. The magatama wasn't on it due to a error. Kishi made the same error drawing Sasuke EMS.