HP: Dangerous Professor from Azkaban

Expelled from Hogwarts. Imprisoned in Azkaban. Forgotten by the world. Greengrass was a name that echoed in the Wizarding World, evoking both fear and admiration. A half-blood with roots in a pure-blood family, he was a prodigy who devised spells that others dared not utter. A genius who overstepped all boundaries in his quest for knowledge—and ultimately faced the consequences. Labelled as dangerous, he slipped into the darkness of Azkaban. Five years later, he emerges—not as a student, but as a professor. Greengrass is a transmigrator. Coming from a pure-blood lineage in the magical realm, his initial encounter with magic was through a Cruciatus Curse inflicted by his mother. When he sought assistance from his father, he discovered that his father was a Death Eater. His time in Azkaban did not drive him to madness or corruption, but instead bestowed upon him a certain chilling elegance. Armed with the power of forbidden knowledge, a mind honed by suffering, and secrets that only a dark wizard could possess… the Dangerous Genius has returned.______Support the translation and read Two Weeks/12 chaps ahead at-Patreon/DarkDevil1