Sasami

Mizuno Takahiro is a student training to be a begleiter (knight's assistant) at an academy where aspiring knights joust. He himself had come to this academy to train as a knight, after becoming the unrivaled junior champion in his own home country. However, an injury in a tournament's finals forced him to withdraw. Instead, he decides to be a begleiter to one of the academy's…

In order to save the world from the side effects of Washuu's latest experiments, Masaki Tenchi goes undercover as a teacher. He is immediately swept up in a conflict between the student council and the science club, who each have a member that is key to Tenchi's mission. Source: ANN