Well, I apologize for failing to get a decent photo of Nendoroid Gokou Ruri (a.k.a Kuroneko), but it is pretty obvious that the one beside Kirino is the gothic lolita otaku, right? Mikatan has also taken a photo of this scene from another view, which you can see after the break.
(Thanks to Singer_Yuna from Nendoroid.es for the news tip! ^^)
OK, this photo from Mikatan’s blog post DOES reveal some interesting info. First – the one between Asakura Nemu and Gokou Ruri is the colored Nendoroid Kinoshita Hideyoshi. Second – the uncolored Nendoroid between Asakura Nemu and Lynette Bishop. I cannot see him/her clearly though … could anyone give me a hint? ^^
UPDATE: The secound uncolored Nendoroid turned out to be Nendoroid Charlotte Y Eager from Strike Witches. Thanks again to Singer_Yuna for providing the info! ^^