1girl, all_fours, animal_ear_fluff, animal_ears, arknights, bare_shoulders, bikini, black_bikini, blurry, blurry_background, brown_hair, closed_mouth, day, depth_of_field, hair_between_eyes, hair_ornament, hairclip, long_hair, looking_at_viewer, outdoors, signature, smile, solo, sussurro_(arknights), sussurro_(summer_flower)_(arknights), swimsuit, twintails, water, welt_(kinsei_koutenkyoku), x_hair_ornament