1girl, arknights, beudelb, bikini, blue_background, demon_horns, detached_sleeves, dutch_angle, foreshortening, hair_between_eyes, horns, long_hair, looking_at_viewer, midriff, official_alternate_costume, outstretched_arm, purple_eyes, red_hair, simple_background, solo, surtr_(arknights), surtr_(colorful_wonderland)_(arknights), swimsuit, upper_body, white_bikini, white_sleeves