1girl, arknights, armpits, bare_shoulders, bikini, black_bikini, breasts, cleavage, detached_sleeves, grin, hair_between_eyes, horns, large_breasts, long_hair, long_sleeves, looking_at_viewer, lying, navel, omone_hokoma_agm, on_back, one_eye_closed, purple_eyes, red_hair, red_nails, smile, solo, surtr_(arknights), surtr_(colorful_wonderland)_(arknights), swimsuit, swimsuit_cover-up, thigh_strap, very_long_hair