The Isekai Young Heroes' 'Ordinary' Teacher

Ezera Gemstone is a teacher - though he has not always been so. He teaches at a random high school, as the main teacher of a random class of twenty students. He is well liked, and he likes his students in return. This young man with attractive long hair doesn't need any more than this to be happy, overjoyed with this ordinary life filled with loving people. However, peace never seemed to remain stable with Ezera. One day, as all days are, ordinary, filled with teasings and yawns and students trying to get out of their duties but overall a quite peaceful day, the world fell apart for Ezera and his class. Then, quite literally, another built itself around them Another world, another era, whole new dangers, whole new powers, and a royal authority declaring his students to be the long awaited heroes of this world. This only meant trouble to Ezera Gemstone. Immediately cautious, it didn't take him long to realize something was deeply wrong in this kingdom. And Ezera, with the unlikely help of a powerful warrior, would stop at nothing to protect those he loved. (Of course, Ezera would also give a lot to go back to his very random and boring life, why did this happen to him? Also, is that a DRAGON???) *updates at least once every two days*