What actors and actresses appeared in Ore no imouto ga konna ni kawaiiwake nai - 2010?

You're likely thinking of the anime "Ore no Imouto ga Konnani Kawaii Wake ga Nai," which premiered in 2010. However, it's important to note that anime features voice actors rather than live-action actors. Here are the main voice actors for the show:

* Ayana Taketatsu as Kirino Kosaka

* Hiroyuki Yoshino as Kyosuke Kosaka

* Emiri Katou as Ayase Aragaki

* Yumi Hara as Kuroneko (Ruri Gokou)

* Rina Hidaka as Saori Saenai

* Ai Kayano as Manami Tamura

* Kana Asumi as Kanako Kurusu

There are several other voice actors in the anime, but these are some of the most prominent.