Create an image of Nico Robin from One Piece, blending her human side with a dark, demonic transformation. On one side, she appears as her classic self, with her calm, intellectual demeanor, long black hair, and signature outfit. On the other side, she has transformed into a demon, with large, bat-like wings, sharp horns, glowing red eyes, and shadowy energy swirling around her. The background is shrouded in green mist, highlighting the eerie and powerful nature of her demonic side. Her expression should reflect a balance between wisdom and the unleashed chaos of her transformation
