Learning to ride and tame dragons comes easy to most students at Ansarivan Dragonar Academy—except for first-year student Ash Blake, who is known by his fellow classmates as the "number one problem child." Poor Ash is the laughing stock at school because, despite his unfashionably large star-shaped brand that marks him as a future dragon master, he has nothing to show for it. His dragon has never appeared. Until now, that is. One fateful day, Ash's dragon awakes in full glory, but appears different than any dragon ever seen before—in the form of a beautiful girl! What's worse, Ash soon discovers that this new dragon has attitude to spare, as she promptly informs him that she is the master, and he, the servant. Ash's problems with dragon riding have only just begun. (Source: ANN)

Noya Itsuki just transferred to Ebisugawa High School. Since he has always had a fascination with space, he decides to join the Astronomy Club. However, he mistakenly walks into the Asstronomy Club - a club whose members are all female otaku. Itsuki notices that the members are really weird, but he has yet to realize that he joined the wrong club. His life becomes very strange very quickly.

Yumenosaki Private Academy, a school located on a hill facing the ocean. Specializing in boys' idol training, the school has a long history of producing generations of idols for the entertainment world out of the young men overbrimming with talents, like the shining stars in the sky. Due to "special circumstances," you are a transfer student at the school, as well as the only female student there. In fact, you are chosen to be the very first student of the "producer course," and your task is to produce these idols… We hope you will enjoy your journey with the idols you meet at the academy, as well as the vigorous ensemble that together you will make. (Source: Ensemble Stars! Wikia)

Severe internet addiction has become an epidemic infecting the nation's youth, ultimately resulting in their extreme dependence on the world wide web. Those who are too far gone are enrolled at Elite Reeducation Academy in order to help them grow into successful adults. Hibiki is one such teenager who awakens in the facility unaware of how he came to be there. He learns from the head instructor that he was knocked out and brought to the school at his mother's behest, concerned with how belligerent her son was becoming as a result of his internet addiction. Stuck in a place more akin to a prison than an academy, and with no escape from the abuses of the instructors, Hibiki decides to end his life by jumping from the roof. But as fate would have it, he meets a mysterious man named Shin who promises to give his life meaning... [Written by MAL Rewrite]