Kyou kara Ma no Tsuku Jiyuugyou is the novel the anime and manga are based off of. It's about a boy named Yuuri, who gets himself flushed down a toilet into another world. There, he finds out he's the Maoh (demon king) and that the Mazoku (demons) expect

The protagonist is a guy who is among the stupidest of the stupidest in the school. In this school, your grades can, under the supervision of teachers, take a virtual form to do combat! However, if you leave an examination half way, you get zero marks. A

The year is 2013, and it's the city of No. 6: a stringently controlled, diligently maintained megalopolis that embodies the highest ideals of humankind. Sion has lived under close supervision as a "high-ranking elite and therefore one of the city's assets