It turns out that it's going to be a very busy summer for the makers of Watashi ga Motenai no wa Dou Kangaete mo Omaera ga Warui! aka Watamote. As with the season's adaptation of Fate/kaleid liner Prisma Illya, Baka and Test's Shin Oonuma will be directing the Silver Link production. Meanwhile, the ubiquitous Kana Hanazawa joins as the previously revealed Izumi Kitta (Milky Holmes' Cordelia Glauca) voiced lead's best friend.
They will not be sharing many scenes here, but KanaHana is joined by Oreimo co-star Yuuichi Nakamura playing the lead's younger brother.
Takawo Yoshioka (High School DxD) is on series composition, while Hideki Furukawa (episodes and opening of Hidamari Sketch) is character designer and animation director.
So, the chief cast is..
Izumi Kitta - Tomoko Kuroki - a girl who comes to the rude awakening that her late, sweaty nights of playing otome games haven't prepared her to make friends in highschool.
Yuuichi Nakamura - Tomoki Kuroki - Tomoko's junior highschool age younger brother, who is a lot less sympathetic to her problems and way of thinking than she assumes. Anime character description suggests that he has a nicer side under his bruskness.
Kana Hanazawa - Yū Naruse - Tomoko's only friend. They shared otaku interests in middle school, and while Yu-chan hasn't entirely abandoned them, she has dyed her hair, found a boyfriend and become popular.