Seigi no Mikata
Does anybody knows this series? It's actually a manga turned into Live Series. It's about a 15-year-old named Youko, a young girl who is constantly tormented by her self-centered and devilish older sister Makiko, who works for a government office after having graduated from a famous university. But despite her ill nature, Makiko's actions tend to somehow make things better for those around her, causing others to praise her as an "ally of justice."
It's a really cool series. You should watch it.
Kanata Hongo is in it! :D: