character: firefly_(honkai:_star_rail), A medium shot from a side angle depicts firefly_(honkai:_star_rail) peacefully sleeping in a seat inside the Astral Express train. She has a gentle, innocent sleeping expression with closed eyes, leaning her head slightly against the window. She has long grey hair adorned with a black hairband and a small bow, wearing a white long-sleeved shirt under a black jacket and a matching skirt. Her hands are softly folded in her lap, resting motionless as she slumbers. The interior of the train car features plush seating and metallic accents, with the vastness of space and distant stars visible through the glass pane behind her. The visual style is a soft, painterly anime aesthetic with visible brush textures, layered color blocks, and loose, sketch-like linework. The atmosphere is serene, with cool teal-blue tones in the shadows contrasting with warm golden highlights illuminating her face.
