A chibi rendition of Yin from Darker than Black, this Nendoroid Petit captures her quiet presence with cute, compact charm. Yin features pale silver hair sculpted in soft waves that frame a small, expressive face, bright blue eyes, and a porcelain-like pale complexion. She wears her distinctive, restrained ensemble—a dark, tailored coat with lighter trim over a simple blouse and skirt—minimizing detailing to suit the miniature scale. The figure is rich in subtle shading and fine lines, with movable joints typical of Nendoroids Petit, a few interchangeable hands for gentle poses, and a tiny accessory that hints at her data-link abilities, all supported by a clear stand.

Yin is introduced in the Darker than Black universe as a Doll with enhanced perception and a unique connection to data and environments governed by the series' Contractors. She acts as a compassionate, observant presence within Hei's team, often guiding, monitoring, and decoding incoming information from supernatural events. Yin's backstory involves her creation and the emotional consequences of becoming an instrument in a shadowy war between organization factions. Through her experiences, she confronts questions about identity, free will, and loyalty, providing a humane perspective amid action and consequences that unfold around Hei and his companions.