Featuring Engi Threepiece in a poised, dynamic stance, this resin figure captures the eerie charm of Yumekui Merry's character. The piece is crafted by Zoukeikoubou Ichiyoutei in a detailed resin sculpt, presenting a three-piece ensemble that blends elegant lines with a hint of supernatural energy. The base and pose emphasize a sense of motion and dreamlike weightlessness, with carefully carved folds, layered garments, and subtle texture on hair and fabric. The sculpt highlights Engi's signature accessories, such as a headpiece and ornate clothing, and reveals fine craftsmanship in the transition between cloth and anatomy. The finish emphasizes shadows and highlights to bring out the three-piece silhouette and the character's reserved expression, creating a striking centerpiece for a collection.

Engi Threepiece appears in Yumekui Merry as a crossroads between dream and waking life. As a character who embodies three aspects of memory, desire, and fear, she travels alongside or against the protagonist as the world shifts between nightmare and daylight. In their encounters, she reveals a calm, composed demeanor but carries hints of mischief and sorrow in her eyes. Her presence in the story acts as a catalyst that tests the boundaries of trust and illusion, forcing others to question which dreams are safe to chase. The Threepiece motif also reflects her wardrobe and silhouette, which change with mood and the shifting dream state, making her interactions with Merry and other dream-eaters memorable and poignant.