2girls, arms_behind_back, ass, back-to-back, barefoot, black_hair, black_one-piece_swimsuit, blonde_hair, blue_eyes, blue_hair, breasts, dark-skinned_female, dark_skin, earrings, feet, from_behind, from_side, full_body, glasses, hair_ornament, hairband, hairclip, jewelry, kizaki_ririko, large_breasts, legs, long_hair, looking_at_viewer, looking_back, miyamoto_issa, multiple_girls, navel, one-piece_swimsuit, original, parted_lips, red_background, red_eyes, sagisawa_reika, semi-rimless_eyewear, sideboob, simple_background, slingshot_swimsuit, smile, standing, swimsuit, thighs, toenails, toes, under-rim_eyewear, white_hairband, white_one-piece_swimsuit