User blog comment:A, Mori/Ludus History Idea/@comment-1827303-20140924190916/@comment-1713909-20140924192200

Despite the fact that, A, Atsaan would have no need for such an object like the book. Why would he, a godlike being with near infinite power, want a book such as that? And no, Atsaan never carried the book formerly.

Again, it was mentioned in trix 2 (God I hate referencing that story) that Ao Oni were, at one point, not hostile. The original Oni was possessed by the spirits within the mansion. Now whether or not you want to pin THAT on the book is another different matter entirely. (I for one am actually okay with cursing that mansion, thus causing Ao Oni's appearance. It's not entirely too major, and it's not completely ridiculous_ The only reason that one Ao Oni got the "X" moniker is because he was basically incredibly powerful as a result of being prototyped. It's nothing more than a means to tell a prototyped model apart from a standard.

Perhaps the reason he did so was due to Lazro himself. He has been shown to display large, constant signs of ignoring blatant laws of reality, and can perform feats not disimilar to that (when he's lucky anyways). Maybe due to this, Waldo managed to teleport there without causing Lazro to swap, thus causing the corruption rifts to begin with. Remember that the only other instance of teleport swapping was in regards to 8^y, and even then, canonically, she was just "Very fucked up" by the process and never actually teleported. (Unless you wanna consider the non canon comment I posted canon to this, in which case that just brings up so many more problems I am not going to get into here.) Also remember the gang sent Waldo back to the bizarro universe (Somehow) so doing something like that isn't outside the realm of possibility.