1girl, ahoge, arknights, ass, ball, beachball, bikini, black_hair, breasts, epicstash, frilled_bikini, frills, grey_eyes, hair_between_eyes, hair_bun, hair_ornament, hairclip, la_pluma_(arknights), la_pluma_(summer_flowers)_(arknights), looking_at_viewer, looking_back, official_alternate_costume, short_hair, sideboob, sidelocks, single_hair_bun, solo, swimsuit, water