It has been revealed in the Dengeki Bunko Magazine's 47th edition that TV anime adaptation of light novel Netoge no Yome wa Onnanoko ja Nai to Omotta? (And you thought there is never a girl online?) will premiere in Spring 2016. In addition, the cast and staff were also announced.

Staff
Director: Shinsuke Yanagi (Momo Kyun Sword)
Series Composition: Tatsuya Takahashi (The iDOLM@STER Cinderella Girls 2nd Season)
Animation Production: Project No.9

Cast
Hideki Nishimura: Toshiyuki Toyonaga (Durarara!!x2 Shou)
Ako Tamaki: Rina Hidaka (Kantai Collection: KanColle)
Akane Segawa: Inori Minase (Gochuumon wa Usagi Desu ka??)
Kyou Goshouin: M.A.O (Mao Ichimichi) (Gakkougurashi!)
Nanako Akiyama: Hitomi Ohwada (Charlotte)
Yui Saitou: Yoshino Nanjou (Robotics;Notes)

Synopsis
Our naïve protagonist proposes to a female character in an online game, only to find out that the player is actually a guy. Traumatized by that, he decides to never trust a girl online, but now, two years later, a female player is proposing to him. What will happen? (Source: Unlimited Novel Failures, edited)

The series is written by Shibai Kineko and illustrated by Hisasi. It has been serialized since July 2013, with eight volumes in publishing.

Source: Otakomu