This image depicts Heiseyin, a character from the game "Honkai: Star Rail", who is depicted in a lewd and erotic pose, reclining on a bed covered with a white sheet, resting her head on a pillow. The background showcases a bedroom adorned with classical carved decorations, while the window reveals a dusk sky with clouds tinged in warm gold. Sunlight filters through the window panes, casting a soft and dreamy ambiance. She possesses long, black, and silky hair, adorned with silver thorny hair ornaments, with a faint light blue gradient visible at the ends, echoing her clear, ocean-like blue eyes. She wears exquisite earrings and a necklace, with a teardrop-shaped blue gemstone embedded in the necklace, perfectly complementing her overall elegant and regal demeanor. Heiseyin is dressed in a intricately designed gown, featuring a black lace long sleeve on the upper body, with delicate floral patterns decorating the cuffs and shoulders. The chest is adorned with a deep blue petal-like design, and the collar is open, revealing a fair and smooth chest and alluring breasts. The skirt part is a white and light blue pleated design, with rich layers and decorative teardrop-like elements at the edges, creating a sexy yet elegant overall look. Her legs are spread in an M shape, exposing her lower body, wearing black stockings with black lace patterns. Her right hand rests on her lips with a red glove, while her left hand lifts her labia, revealing a wet pussy with a viscous, transparent liquid. Heiseyin's eyes are captivating and slightly mysterious, with her mouth slightly upturned. Her posture is sexy and passionate, yet still regal and dignified, perfectly showcasing her unique charm as the "Sea Monster Princess".