A Classmate is a Princess Knight!, Hime Kishi ga Classmate!, Himekishi ga Classmate! The Comic, The Princess Knight is a Classmate!, Моя одноклассница — принцесса-рыцарь!, 공주 기사가 급우!, 姫騎士がクラスメート! THE COMIC, 我的同学是姬骑士
After he and his entire class died on a field trip, Odamori accepts a job offer from a mysterious man to be reincarnated. However his new job turns out to be that of a ‘Slavemancer’, with the power to dominate the minds of others and turn them into his toys. Soon, however his evil actions lead to a Princess Knight (who turns out to be one of his previous, more popular classmates) being dispatched to apprehend him. But Odamori of course has something different planned for their reunion. Manga Adaptation of the Light Novel by the same name.