Actually, I suspect that the new Heart of Jupiter arc is going to dig deeper into the history of Majima Academy.
Remember the school emblem? It features goddess Detemer, enclosed in a hexagon. We have six goddesses, which perfectly matches the number of points of the hexagon.
Haqua once mentioned that Majima area was once a battleground, and furthermore, weiss were sealed nearby by goddesses who were also sealed in same area.
Wakaki briefly touched upon the history in chapter 169, then it was abruptly dropped when Keima and Elsie stumbled across the old hell's monster breeding place... No, I don't think it was his intention to give us cursory details then just drop it like that.
Given the details provided in that brief detour, I'm willing to bet that the girl awakening in middle of the Majima grounds in Keima's 'vision' will be related to that in some way - quote possibly being the goddess Detemer that Majima Academy had adopted as part of its emblem.
...and awesome animated sig btw, Randrak42.
