The Replica School Starts with Young and Dangerous

Serious version: Save the school that is about to be disbanded, teach the students to fly to the sky, Fight against the alien beasts in the stars, regain human territory, and liberate all mankind. Erha version: A time traveler brings stories from his past life to another world, teaches students to save the world, and wins by the way. Secondary version: A story about a time-traveler leading students to fly around the world to show off. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.