An ongoing 2012 light novel series written and illustrated by Kamiya Yuu (a pseudonym for Brazilian-Japanese Thiago Furukawa Lucas), published under Media Factory's "MF Bunko J" imprint. The series was also adapted into a manga, running since 2013, illustrated by Hiiragi Mashiro, an anime series by Madhouse that aired Spring season 2014, and an anime film that was released in 2017.
18-year-old Sora and his 11-year-old stepsister Shiro are a pair of shut-ins and gamers under the collective account of "『 』" ("Kuuhaku"; lit., a blank space), legendary for winning every game they play, who are also disillusioned with society.
Their lives are changed when they are summoned to Disboard, a world where violence is banned and all disputes are settled with games, by its androgynous deity, Teto. Deciding to settle in, the pair began representing humans, ranked last among the sixteen sentient races of Disboard, together with its former princess, Stephanie Dora, in order to reclaim lost lands as well as their power.