Aldnoah, the Demon King, takes his own life in front of the heroes and is reborn in the world a thousand years later. In order to see if humans have become strong enough to stand up to the Demon King, Aldnoah, who has grown into a young man, decides to attend the Academy for Heroes...
Tensei Maou no Yuusha Gakuen Musou is a completed manga by Kishimoto Kazuha, first published in 2022. It blends action, isekai and fantasy. You can read all 1 available chapters of Tensei Maou no Yuusha Gakuen Musou online for free on MangaPulse; the newest is Chapter 1, added 2023-07-27. The series is finished, so you can read it from start to end in one go.