Soul of Rebirth

The Soul of Rebirth is a bonus quest in the Final Fantasy II part of Final Fantasy I & II: Dawn of Souls. It becomes available after defeating the Emperor's demonic form for the first time. In it, Minwu awakens in an area that resembles the Jade Passage following his fatal attempt to unseal the door guarding the Ultima spell. He meets up with Scott, Josef, and Ricard as he makes his way through the Jade Passage. After passing through a portal, he discovers a town, full of those who have died. Another portal leads to a chamber resembling the Ultima chamber, where Minwu discovers another copy of the Ultima spell, but must fight the Ultima Weapon for it.

The four slain heroes then travel to a tower resembling Pandemonium, and climb to its top. There the group of four encounters the Emperor, though he is not quite the same as in the main quest. The Emperor explains his fate was split in twain, and that he is the "Light Emperor". After seeing a vision of Firion's attack on the "Dark Emperor" they realize that the Light Emperor is also the enemy and engage him in battle. After they destroy him, they see the aftermath of Firion's battle with the Dark Emperor and finally get to rest in peace.