Gate[3] (Japanese: ゲート 自衛隊 彼の地にて、斯く戦えり, Hepburn: Gēto: Jieitai Kano Chi nite, Kaku Tatakaeri, lit. Gate: Thus the Japanese Self-Defense Force Fought in Their Land), is a Japanese fantasy novel series written by Takumi Yanai and illustrated by Daisuke Izuka and Kurojishi. Originally, it was serialized from 2006 to 2009 on the user-generated novel publishing website Arcadia until it was acquired by publisher AlphaPolis in 2010. A manga adaptation illustrated by Satoru Sao began in July 2011, and three spin-off manga began in 2015.[4] The first half of an anime television series adaptation aired from July to September 2015, and the second half aired from January to March 2016. The series has been licensed by Sentai Filmworks in North America. A sequel novel series, Gate Season 2: Jieitai Kano Umi nite, Kaku Tatakaeri, began publication in 2017.