Standing in a poised mid-performance stance, Katsuragi Lilja is sculpted in a refined white Espresto outfit. The figure captures a sense of movement with dynamic fabric folds, from the fluttering capelet at her shoulders to the crisp lines of the bodice and skirt. Her long hair flows in soft, glossy waves, tied with delicate ribbons that catch light as she tilts her head with a confident gaze. The eyes are carefully painted to convey resolve and warmth, while subtle shading enhances muscle definition and the draping of the costume. Fine sculpting detail is visible in the gloves, shoes, and accessories, and the base features a crystal-like texture that complements the white color palette without overpowering the figure. Overall, the piece exudes elegance, poise, and the energy of a standout idol on stage.

In the Gakuen iDOLM@STER universe, Katsuragi Lilja emerges as a diligent student whose voice carries warmth and icy clarity. As a member of the Espresto unit, she channels refined elegance into every performance, blending precise choreography with a calm, measured stage presence. Lilja's backstory hints at years of disciplined training, a mentor who valued artistry over flash, and a devoted fan base drawn to her lucid storytelling through song. Offstage she is thoughtful and kind, a supportive friend to fellow performers who helps sharpen their acts. Her in-series arc centers on chasing the perfect balance between technical precision and vulnerable emotion, the breakthrough moment when a difficult routine finally clicks, and the audience erupts in heartfelt applause. The narrative emphasizes growth, teamwork, and the power of a moment when confidence shines as brightly as a spotlight on a quiet, refined stage.