[Harry Potter] Azkaban's Apprentice

Irreverent blurb: System: If Merlin would give me a chance to start over and return to the day I first met that gray-haired bastard, I'd turn around and sprint off the planet at light speed. I wouldn't look back! Vade: But there's no "if" in this world. :) System: ... Vade: Besides, didn't I complete every task you assigned me perfectly? System: If you only look at the results, sure. But the process... It was full of bloodshed and despair, and every person at Hogwarts except Vade was left miserable. Serious blurb: In his previous life, he was hunted down by the righteous. Cultivating the demonic path to its end had led only to ruin. Reborn as a child in this life, he still hadn't changed his ways, and couldn't shake his wicked nature. As luck would have it, a shortsighted rescue System bound itself to him and ordered him to do good and save others. If Hogwarts had five houses, the Sorting Hat would shout "Azkaban!" without a moment's hesitation. [Warnings] 1. The protagonist is not a good person. The protagonist is not a good person. The protagonist is not a good person!!!! 2. A Harry Potter fanfic only. Not contracted. Updates whenever. 3. If you feel uncomfortable while reading, stop immediately or click away. You may have wildly conflicting values from the protagonist's. (And that means you're lawful good, an absolute good person. Applause!) Theme: People are born longing for freedom