Killaria the Former Demon Lord

Killaria was a Demon Lord who terrorized the land for years and was finally defeated by a group of heros, led by a warrior of great skill who Killaria considered her nemesis. After 12 years she finally reformed...but looks far different than they did before. She still intends to find the hero who defeated them and confront them properly once more, but finds the Hero isn't doing so great anymore...