Kiken na Aneki (2005)

Kiken na Aneki 2005 / 危険なアネキ 2005 / Dangerous Sister , Dangerous Beauty

Hiroko is the number-one hostess club girl. Hailing from the Miyazaki countryside, she has been told since her youth that all she has is a beautiful face. Her brilliant younger brother, who aims to become a doctor, is her only pride. For his sake, she is willing to put up with all sorts of hardships in a display of unconditional love. (Source: DramaWiki)