1girl, asta \(honkai: star rail\), detached sleeves, sleeveless shirt, id card, high-waist skirt, overskirt, thigh strap, bracelet, hairpin, belt, bowtie, choker, looking at viewer, parted lips, adjusting hair, petals, floating hair, cowboy shot, depth of field, space, nebula, starry sky, earth \(planet\), masterpiece