2girls, :d, ahoge, blue_theme, cosplay, costume_switch, covered_navel, dark-skinned_female, dark_skin, fang, flower, glasses, hair_flower, hair_ornament, hand_on_hip, hat, holding_hands, long_hair, looking_at_viewer, monochrome, multiple_girls, one-piece_swimsuit, open_mouth, ponytail, ro-500_(kancolle)_(cosplay), sailor_collar, school_swimsuit, simple_background, smile, swimsuit, tan, tanlines, thighhighs, white_background