Transform this illustration into a mystical, fantastical glowing style. Glow color: rainbow. Make only the lines — the character's outlines, costume lines, accessory details and the flow of the hair — glow strongly with beautiful rainbow light. The lines should shine softly from within, rising slowly with a gentle neon light, scattering faint particles of light and softly illuminating the surroundings. Do not light up the surfaces: only the lines glow as the star of the image, while everything else (skin, hair and costume fills) is kept extremely subdued, just faintly translucent. The glowing lines create very strong contrast against a dark background, emphasizing the rainbow spectrum gently spreading out. Every line of the character radiates a fantastical, divine glow, with light flowing beautifully along the lines. The overall mood is cool, mysterious and magical: a breathtaking silhouette where only the rainbow outlines of light emerge. Faithfully keep the original illustration's composition, the character's expression, pose, silhouette and main features completely intact.