Gakuen senki Murjó

The world is about to be turned upside down for Hajime Murata. First, an alien ship appears over Tokyo, and then a mysterious new student shows up at his school. Suddenly, students are displaying psychic powers, a giant defends the city from aliens, and men armed with weapons are lurking around the school. Now Hajime is determined to discover the truth behind a world he thought he knew! (Crunchyroll)