3/31/2010. That's today's date, and so it was yesterday, and the day before that... and so will tomorrow, if you don't put an end to the time loop that has been going on for God knows how long.

Makoto Yuki is no longer there, so his leadership is effectively discarded. Luckily, a sister unit to Aigis, known as Metis, appeared as soon as this loop did, and she seems to know quite a bit about the situation going on. She showed you a trapdoor below the carpet of the dorm's common room, that leads to a desert full of doors where nothing is quite as it seems. The Abyss of Time, key to end this madness.

Exploring it, you have all come across several fragments of everyone's past, each of them awarding the respective individual with a key. The moment they awakened to their Personas and the potential to exist in the Dark Hour, as you all deduced. Ken, Akihiko, Junpei and Koromaru, Mitsuru and then Yukari. Everyone's secrets have been unveiled... except for your own.

There you stood. In front of the next, and hopefully the last golden door. You know what to do, just enter the door and walk into your memory. Let everyone see... what resolve was the one that truly awakened your soul's power.