Anime girl in green dress walking in the snow with an octopus

"A single girl, in her early teens, with ultra-sharp features and bright blue eyes, stands in a 4k masterpiece. She has a flat chest, a young and petite frame, and stands barefooted, submerged knee-deep in the clear, icy vast water. Her very long, messy hair is a brownish-purple color, braided to resemble the tentacles of an octopus, yet still made of human hair. She is clad in a wet, thin, all-dark blue-green dress with spaghetti straps. She stands amidst the frozen waters and snow beneath the Northern Lights, or the Aurora Borealis, with icicles forming on her clothes."