1girl, ;), arknights, arms_up, bikini, black_bikini, blue_sky, breasts, cleavage, demon_girl, demon_horns, detached_sleeves, hair_between_eyes, hammock, horns, io_(io_oekaki), long_hair, looking_at_viewer, navel, official_alternate_costume, one_eye_closed, outdoors, pink_sky, purple_eyes, red_hair, shirt, sky, smile, solo, stomach, surtr_(arknights), surtr_(colorful_wonderland)_(arknights), swimsuit, thigh_strap, very_long_hair, white_shirt, white_sleeves