Board Thread:Questions and Answers/@comment-177.143.84.148-20160110023317/@comment-25121259-20160112104127

Hm ? It should be that Takamagahara caused it, by forcing Amaterasu to do it. After all, Amaterasu's memory is required for that, since it's just rewriting the world into it's previous state based on her memories and the Master Unit's power (in accordance with the fixed values set in the book). Not to forget that it is stated in the "story" that it is the girl that received the "book" that constantly rewrites it's content.