haruyama kazunori, marina (ningyo hime marina no boken), ningyo hime marina no boken, lowres, 1990s (style), 1girl, arm up, armpits, ass, ass focus, blonde hair, blue background, breasts, earrings, female focus, from side, gem, huge ass, jewelry, long hair, looking at viewer, mermaid, monster girl, nipple slip, nipples, pearl (gemstone), purple eyes, retro artstyle, scales, shell, shell earrings, smile, solo, underwater