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Expelled from Hogwarts. Imprisoned in Azkaban. Forgotten by the world.
    Sagres Greengrass was a name whispered in the Wizarding World with fear and awe.
    A half-blood from a pure-blood family. A prodigy who created spells no one dared speak aloud. A genius who crossed every line in pursuit of knowledge—and paid the price.
    Branded dangerous, he vanished into the shadows of Azkaban.
    Five years later, he returns—not as a student, but as a professor.
    Sagres Greengrass is a transmigrator.
    As a member of a pure-blood family in the magical world, his first experience of magic came from a Cruciatus Curse cast by his mother.
    When he wanted to seek help from his father, he found out that his father was a Death Eater.
    Imprisonment in Azkaban did not leave him with madness and corruption, but rather a kind of chilling elegance.
    With the power of forbidden knowledge, a mind sharpened by torment, and secrets only a dark wizard could know…
    The Dangerous Genius is back.
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