HP: Regent of Azkaban

[No CP+career flow+dominance of the magic world+cool writing] Cassian was imprisoned in Azkaban when he was three years old. When he was ten years old, his parents died tragically, and he was also thrown into the Dementor Abyss by Death Eaters. Everyone thought he was dead. Until he returned through the black mist, executed his enemies, and forced Bellatrix to surrender. Later, Sirius led a group of prisoners to escape from prison, captured Peter, took back Harry, and declared war on the Ministry of Magic. The entire wizarding world believed that this rebel of the Black family was the King of Azkaban. Only the true inner circle knew that Sirius wore the crown just to shield the child on the throne. Therefore, Cassian entered Hogwarts as an "innocent survivor". Some people sympathized with him, some had a crush on him, some wanted to marry their daughters to him, and some laughed at him for being just an orphan under Sirius's protection. Until the Ministry of Magic surrounded Hogwarts with heavy troops, Sirius bowed his head in public, Bella knelt down on one knee, and the Dementors all over the sky bowed to the boy at the same time. "King, please give the order." That day, Dumbledore finally understood: Those who escaped from Azkaban were never a group of prisoners, but a new dynasty that was about to engulf the wizarding world.