rikumoto yoshiyuki, amami haruka, idolmaster, idolmaster (classic), idolmaster 1, md5 mismatch, 00s, 1girl, bikini, bikini top only, blue eyes, bow, breasts, brown hair, female focus, fishtail, from side, hair bow, hair ribbon, hugging own legs, looking at viewer, mermaid, monster girl, oekaki, ribbon, shell, shell bikini, simple background, sitting, small breasts, smile, solo, swimsuit, twintails, white background