SHIMONETA: A Boring World Where the Concept of Dirty Jokes Doesn’t Exist(2012)

Shimoneta to Iu Gainen ga Sonzai Shinai Taikutsu na Sekai

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).

(Source: Anime News Network)