The Tsutsukakushi Tsukiko Swimsuit Ver. figure presents the quiet, graceful tsundere heroine in a poised standing pose. She wears a glossy one-piece swimsuit with subtle panel lines and a matching hair ribbon, capturing a beach-side mood. The sculpt emphasizes Tsukiko's slender silhouette with careful attention to bust line, waist, and hip curves while preserving a modest, charming look. The long hair is styled with delicate strands framing her face and a few dynamic locks that catch light. The base is minimalistic, forming a simple platform that supports a natural, balanced stance. Paintwork highlights shading on skin tone and swimsuit fabric, ensuring smooth gradients across the form and clean edge alignment. Overall, it exudes playful elegance and collector-quality finish.

Tsutsukakushi Tsukiko is introduced as a reserved, observant classmate who hides a deeper longing behind a calm facade. In the arc from the series, she becomes linked to a mysterious magical contract that reveals hidden facets of her personality and wishes. Her interactions with the protagonist trigger moments of self-discovery as she navigates friendship, loyalty, and first-love feelings. Through humor and occasional heartache, Tsukiko's arc explores themes of identity, the pressure to present a perfect image, and the courage it takes to reveal one's true self. The swimsuit variant captures her carefree, relaxed moments away from formal settings, offering fans a glimpse of her lighter, more playful side while preserving the character's integrity.