ED from Nogizaka Haruka no Himitsu (乃木坂春香の秘密)

Seriously though, for an anime to poke fun of the Akiba-Kei and Otaku sub-culture isn’t entirely new (c.f. Densha Otoko, and NHK ni Yōkoso! (N・H・Kにようこそ)), but it does put a twist in changing the stereotype from the guy to the girl.