I've seen other sources some events that will occur (or have already occurred, do not know) and I wonder if they are unique to the Japanese version or also for the English version will ..... Disculpen si he escrito mal algo :)
First one is japanese exclusive.
Second one will happen in BCEN, we already made a page for this event.
the first picture will also available on bcen. the stage name is "Sender Unknown". easy level. check detail here .