1girl, ahoge, animal_ears, arknights, ass, back, bikini, black_bikini, bracelet, facing_away, fox_ears, fox_girl, fox_tail, from_behind, grey_background, grey_hair, jewelry, off-shoulder_bikini, off_shoulder, official_alternate_costume, short_twintails, solo, sussurro_(arknights), sussurro_(summer_flower)_(arknights), swimsuit, tail, timitarcat, twintails