The "Negative Emotion Ghosts" were given a chance to be alive and happy. On one condition: they have to think of a plan to prevent "Toxic Tree Monster" and "Berserk Warrior" from completely destroying the physical forms of Dusky's other creations. The plan has to work, or else they'll have to suffer until they completely fall apart. If it works, the "Second Chance" effect will be permanent.
Btw, none of them wanted to be reborn as a human. New Names: - Willow (Envy) - Marina (Misery) - Dario (Dread)