A Gryffindor at the House of Black
What if the black sheep of the house of Black was actually the son the most Dangerous villain that the Wizarding England had ever known?
The Horror!
Thankfully for him, Sirius was a clever, strong-headed and a rebellious son.
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 Not many people knew about it, not even him. For the first 13 years of his life, Sirius had no idea that he was the son of the infamous Lord Voldemort!
 His father was absent and neglectful all his childhood, but, At the age of eleven, when he was chosen to the house of Gryffindor, he got severely punished by a raging lord voldemort. Sirius would always remember the agony of his first cruciatus curse.Â
 Voldemort decided to enrol him under his service, as a teenager to distort his vision of the world. However, because of his sharp tongue and Sharper wit, Sirius was ostracised by the other members of his father's army, and he ended up receiving much more severe punishments than the rest.Â
 The terrible conditions he had to endure led him to question his father's behaviour and the purists' death eaters' beliefs.
 As he became close to James Potter, the son of an old noble and wealthy pureblood family, his father tried to use him to recruit other pureblood students to their cause. When he failed, he was assigned to spy on his friends, instead.Â
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 Despite his orders, and against all odds, Sirius ended up building a strong friendship with a gentle werewolf and a muggle born, read headed and strong willed witch. This new friendship gave the boy a broader perspective about human rights in the wizarding community and taught him what loyalty truly meant.Â
  Because of Sirius's doubts about his role in his father's plans, he started to get curious as he grew up into a strong and brave young man. He discovered that people started to organise themselves in a widely spread resistance in the entire country. and instead of telling his father he decided to join the cause that seemed the most just to his Gryphondor's heart.Â
  Even so, he continued having some sort of loyalty to his family until he found out about his older brother's fate. When he learned about Regulus's sacrifice and his family's involvement in his cold merciless murder. He left home and he became Voldemort's number one enemy. When the latter found out about his son's betrayal he did everything in his powers to capture him and kill him. But, his friends always had his back, and he couldn't get to him.
  This is why the cunning patriarch decided to ruin his traitor son's annoying friendship with the enemy. He prepared a devilish trap for the Potter's family and put the blame of an organised massive attack on Sirius's back.
  The poor young man was arrested and sent to Azkaban, while the Potters and the other members of the resistance believed he had betrayed them. James and Lily Potter put their trust in someone else and learned their mistake too late. The Aurors died without talking to their real friend.
 Although he was innocent Sirius spent most of his adult life in jail because of that. But, he spent every conscious second of the honorific stay among soul sucking Dementors plotting his vengeance against his cruel father. He swore to bring him and his entire army down by any means necessary and all by himself, if he had to. But first, he had to escape that rotten hole.
  When Sirius learned about the murder of his friends, his resolve became a desperation to right all the wrongs that his own flesh and blood caused to honest and innocent people.
 His first mission was to find his godson and tell him the truth about him and his parents. His second oath was to destroy the monster who destroyed his life and terrorised all of England.