Shimoneta: A Boring World Where the Concept of Dirty Jokes Doesn’t Exist (下ネタという概念が存在しない退屈な世界, Shimoneta to Iu Gainen ga Sonzai Shinai Taikutsu na Sekai), officially abbreviated as Shimoseka (下セカ) in Japan, is a Japanese light novel series written by Hirotaka Akagi and illustrated by Eito Shimotsuki. Shogakukan has published eight volumes since July 2012 under their Gagaga Bunko imprint. An anime television series adaptation by J.C.Staff began airing in July 2015. Shimoneta (下ネタ) is a Japanese word for “dirty joke” or “blue joke”, “erotic topic”.
Sixteen years after the “Law for Public Order and Morals in Healthy Child-Raising” banned coarse language in the country, Tanukichi Okuma enrolls in the country’s leading elite public morals school and is soon invited into the Anti-Societal Organization (SOX) by its founder, Ayame Kajou. As a member blackmailed into joining by Ayame, Tanukichi ends up taking part in obscene acts of terrorism against the talented student council president Anna (for whom Tanukichi has a crush on).