This Rui figure from Kimetsu no Yaiba Oni no Sou Vol.2 captures the demon's cold, calculating presence in a dynamic, mid-action pose. The head is sculpted with Rui's distinct features—pale skin, sharp gaze, and neatly styled hair—framing a sculpted kimono that flows in layered folds. The white kimono showcases a spider-web motif rendered with subtle shading to hint at age and wear, while crimson accents along the hems add contrast. His long, slender fingers guide the ethereal threads that seem to weave around him, creating an impression of control and menace. The base evokes a rough battlefield surface with textured rock effects and faint blood-red wash to heighten drama. Hand-painted details enhance shadows, highlights, and fabric texture, delivering a premium display piece for collectors.

Rui is one of the Twelve Demon Moons, Lower Moon Five, known for his icy composure and ruthless belief in family. He fashions his own form of kinship by turning humans into a 'family' through coercion and spider-thread manipulation, creating a haunting web around his victims. In his backstory, Rui seeks to assemble a perfect family by severing ties to all others, a twisted mirror of affection and loyalty. As a foe, he confronts demon slayers and Tanjiro, who must break the web of deception with courage and blade work. His defeat lays bare his loneliness and the perverse logic that fuels his power, making his arc one of the most tragic demonstrations of power and loneliness within Demon Slayer. Despite his terrifying abilities, Rui's vulnerability is revealed through his longing for belonging, a theme that resonates through the narrative, and the figure aims to reflect that depth through careful sculpt and paint.