Rainy Day Melancholy Blue-Gray Film Filter

Apply a rainy day melancholy blue-gray film filter to this photo. Create a desaturated, cool-toned color grade that evokes the feeling of watching rain through a window. Shift the overall palette toward steel blue and slate gray while keeping skin tones slightly warm for contrast. Reduce vibrancy of warm colors (reds, yellows) significantly. Add a subtle misty/foggy quality to the highlights. Increase the blue channel in shadows. The mood should feel introspective, cinematic, and beautifully sad — like a Korean drama rainy scene. Keep the subject unchanged.