He has curly hair the color of green tea, which he keeps relatively short. His eyes are green, and they slope downwards towards the sides of his face, both framed by notably long, thick eyelashes. Rantaro Amami appears to be a rather mysterious individual, he is often carefree, and relaxed. He can sometimes get a bit overwhelmed by the others' stranger personalities. Nevertheless, he is shown to have more patience than others with some eccentric people, and often laughs off any hurtful remarks.