I have a pretty high tolerance for annoying characters in anime. Nanami Nishijou is on a whole different level of annoying, though. All she wants to do is save her older brother, Takumi Nishijou, from becoming a full blown hermit but whoa...talk about using the wrong approach. LOL.
I did try looking for an English dubbed clip featuring Brittney Karbowski as Nanami, but couldn't find one on YouTube. However, this clip pretty much shows her at her most annoying. Thanks for coming up with this, @RosePark! ^_^