User blog comment:ShitaraRen/Upcoming Event?/@comment-1004812-20130510101100/@comment-1004812-20130510103049

Well, come to think of it, Izumo no Okun seems to have come first anyway.

Seeing that, maybe the first photo showed the daemon/s for this past Ninja Tower event, then the 2nd photo...probably the next event (Conquest? Agent Battle? But its original filename suggests dungeon) or new Rare daemons, and then the 3rd and 4th photo probably a further upcoming event. ...At least, that's what I could think of.