Hogwarts: from Prisoner of Sin to King of the World

Other time travelers were born with the system, but Langdon was imprisoned in Azkaban because of the system. In the summer of 1991, because of the Boy Who Lived, Langdon was able to leave Azkaban, which coincided with the system restarting. Since then, the dragon has entered the sea, and the situation has been turbulent. He is Dumbledore's old friend, the second leader of the Order of the Phoenix, and another White Devil after Dumbledore. He secretly collaborated with Voldemort, planned Dumbledore's death, seized the power of the Death Eaters, and personally eliminated the Dark Lord. He is the greatest wizard of our time, he is the leader of the magical world, and he is the feared new devil. Just when wizards in the magical world were crazy about Langdon. But he led the Muggle steel torrent to knock on the door of the magical world. "The decadent magic world, the arrogant wizards, the dream is over, it's time to wake up!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.