score_9, score_8_up, score_7_up, source_anime, 1girl, mature female, slender girl, solo, echidna, white hair, outdoors, smile, looking at viewer, hair ornament, black dress, sleeveless, magic, spaghetti straps, arms behind back, short dress, enchanting forrest, dark forrest, blue fireflies, blue particles, glowing particles, looking to the side, detailed background, night, at night