Shirahoshi is depicted with elegant, flowing aquamarine hair that cascades down her back, catching light with a soft pearlescent sheen. This Special Color ver. features a shimmering, jewel-tone palette that enhances her regal presence as the Neptune princess. The sculpt captures her youthful grace and gentle expression, with large, expressive eyes and a subtle smile. Her tail is rendered with layered fins and delicate gradient scales, finished in translucent blues that suggest the motion of the ocean. Accessories include a sculpted crown and jewelry accents that sparkle with glittery paint, complementing the bodice and cape-like elements. The figure is posed in a poised stance, one hand raised as if to greet the sea, while a clear pedestal and stand lift her above the base. The overall effect is luxurious and dreamlike, typical of Glitter & Glamours, designed to stand out on display.

Shirahoshi, the mermaid princess of Fish-Man Island, is the long-lost daughter of King Neptune. Raised in seclusion to protect a dangerous truth, she begins as a shy, reserved girl who believes she is a statue nobody notices. Her fate shifts when she crosses paths with Monkey D. Luffy and the Straw Hat crew, learning her true power as the living Sea King Poseidon, one of the ancient weapons. Throughout her arc, she learns to trust friends, to use her voice, and to stand up for her people. She communicates with sea kings, calms storms, and becomes a beacon of hope for her island. Shirahoshi's growth from frightened princess to confident queen reflects themes of courage, friendship, and the weight of responsibility, making her one of the most poignant arcs in the series.