Hogwarts: I, the Attack Against the Dark Arts Teacher

Leon traveled to the world of Harry Potter and wanted to lie down and watch the show, but was destroyed by Grindelwald's mysterious army in the final battle. When he opened his eyes again, he returned to the train where he was eleven years old - Harry became Harry, Ron became Lorna, and the world line shifted by 97.3%. This time, with the broken hourglass of time hidden in his left eye, he is determined to train the saviors with his own hands and form a student army that can fight the Dark Lord. "Dark magic attack class starts now."