2girls, beach, blue_sky, blunt_bangs, breasts, brown_eyes, brown_hair, butt_crack, cleavage, closed_eyes, cloud, collarbone, grey_hair, heart, idolmaster, idolmaster_shiny_colors, jewelry, kiria_ai, large_breasts, long_hair, mermaid, monster_girl, monsterification, multiple_girls, navel, necklace, open_mouth, outdoors, pearl_necklace, sand, scales, shell, shell_bikini, sky, smile, swept_bangs, tsukioka_kogane, yukoku_kiriko