Eight year old Harry found out about his godfather. He was permitted to visit the man in Azkaban every couple of days. Everyone wants Sirius to dissapear and the entire wizarding world to forget it ever happened. Harry is ruining everyone's plans...
After preparing for the war, Harry finds himself stranded in a different world, involved in its own war. Now he has to fight to survive, while looking for a way home. Will be quite dark.
After the death of Albus Dumbledore, Harry finds the obsessive nature of a lost childhood friend bent on owning him, Voldemort's mind games, and the overall unfairness of life, to be too much for one child to handle.
Between 5th and 6th years, Harry is ready to take his life into his own hands. He's making decisions that will change the course of the war, and he's determined to learn the truth about Dark magic. Independent!Harry eventually Dark!Harry, no pairing yet.
PostOP, includes HBP. Dark!Harry. In his sixth year at Hogwarts Harry Potter suddenly disappears. He reappears months later almost unrecognizable,a Death Eater and apprentice to the Dark Lord himself. But Harry is not content to remain a servant for long
PART II: Harry Potter thought that he had found a way home but something went wrong. Now he finds himself trapped in another dimension, in which someone else was cursed with the famous scar, and Tom Riddle never became the Dark Lord.