After Twilight Sparkle used the Elements of Harmony with the Humane 6 unite the power of friendship, the rainbow beam they unleash doesn't just purify her—it overwhelms her but Sunset’s demon form shrieks as the rainbow energy tears through her. She claws at the sky, trying to hold on to her power. The light engulfs her and then the light fades, Sunset lies motionless in a giant crater. Her demon wings and tail have vanished. She looks like a regular girl as Sunset lifts up her wounded face with tears streaming down.

Sunset Shimmer: I-I'm sorry. I'm so sorry. I didn't know there was another way.