2girls, d, ahoge, aqua_bikini, artist_name, bare_arms, bare_shoulders, bikini, black_hair, blue_one-piece_swimsuit, blush, bow, breasts, brown_eyes, character_name, colored_inner_hair, copyright_name, frilled_bikini, frills, grey_hair, grin, hair_between_eyes, hair_ornament, hairclip, holding, jdge, jewelry, long_hair, looking_at_viewer, medium_breasts, multicolored_hair, multiple_girls, name_tag, navel, necklace, off_shoulder, one-piece_swimsuit, onii-chan_wa_oshimai!, open_mouth, outline, oyama_mahiro, oyama_mihari, pink_hair, purple_hair, school_swimsuit, siblings, signature, sisters, small_breasts, smile, stomach, swimsuit, twintails, two-tone_hair, water_gun, wet