User blog comment:Linathan/Unit Sneak Peek: Kaito and Meiko/@comment-72.191.9.189-20150329055422/@comment-26140304-20150329110911

In terms of 6* Miku, I think Japan has to release that first before Global since they were the ones that did Miku's artwork. Global was able to release Luka's 6* first as Gumi created the artwork for that.