5girls, ahoge, arm_under_breasts, bikini, black_bikini, black_ribbon, blue_background, blue_bikini, blue_eyes, blunt_bangs, blush, breasts, brown_hair, butterfly_hair_ornament, cleavage, clenched_teeth, eggman_(pixiv28975023), eyes_visible_through_hair, go-toubun_no_hanayome, green_bikini, green_hairband, green_ribbon, hair_between_eyes, hair_ornament, hair_ribbon, hairband, headphones, headphones_around_neck, large_breasts, long_hair, looking_at_viewer, multiple_girls, nakano_ichika, nakano_itsuki, nakano_miku, nakano_nino, nakano_yotsuba, navel, open_mouth, orange_hair, purple_eyes, quintuplets, red_bikini, red_hair, ribbon, short_hair, siblings, side-tie_bikini_bottom, simple_background, sisters, smile, standing, star_(symbol), star_hair_ornament, striped, striped_bikini, swimsuit, teeth, v-shaped_eyebrows, white_background