An anime girl rendered as a deep black silhouette outlined in glowing iridescent neon grips a katana with both hands. Her long dark hair flows with prismatic rim light, her large eyes shimmer with holographic rainbow gradients, and pointed elf ears peek through her strands. Faceted crystal horns blazing with rainbow refraction grow from her head, and dangling floral tassel ornaments with delicate chains sway at the side of her hair.
She wears a kimono whose glowing line-art floral motifs — chrysanthemums and blossoms — are traced in luminous outlines across black fabric, with wide flowing sleeves. She draws the sword diagonally across the composition; its blade is a faceted prismatic rainbow crystal emitting sparkles and lens flares, while the wrapped hilt and round spoked tsuba glow in neon outline.
The background is deep black with faint ornamental patterns barely visible in the darkness, and thin glowing curves and light streaks swirl around the figure. Lighting is pure neon glow with holographic iridescent gradients of blue, purple, pink, gold and green, every edge traced in rainbow light.
The image is a neon line-art, holographic-foil style digital illustration, high contrast against the black base, evoking cyber-fantasy elegance. The composition is a horizontal dynamic poster with the crystal blade cutting diagonally through the frame. The mood is dramatic, luminous and otherworldly, with a polished finish.