1girl, bare legs, blue hair, cang yue (tou xing jiuyue tian), closed mouth, cup, dress, falling petals, from side, glint, holding, holding cup, legs, long hair, long sleeves, night, petals, rooftop, sash, second-party source, sitting on roof, star (sky), toast (gesture), tou xing jiuyue tian, white dress, white footwear, white petals, xun xia xx