[UNDER_LINE]

Don't get too excited about that mysterious voice. It's not what you guys think it is. The truth is REALLY stupid. So stupid that I don't think it's worth putting inside a spoiler tag, but here it is:

Spoiler for the end of this dumb "plot":

After you complete all 5 character routes, you'll unlock the final chapter. In the final chapter, it is revealed that the mysterious voice is a magician from the future. At the end of Touma's route, that voice was actually talking about your (the player's) memory loss and not Touma's. It turns out that you (the player) are an esper from the past, and you are actually controlling the characters of the current period. The future magician wants you (the player) to change the present with him or something (I fast forwarded that part), then you (the player) say that it's wrong and then Touma comes and helps you break the future magician's illusion. In other words, there really is no plot in the final chapter. Heck, the only background image that the final chapter has is a PSP screen with the game's character selection screen.

I was surprised at how cheesy the idea is.