A tale of dark rose

A guy got transmigrated in harry potter world. At first he was happy but when he sees the year he was in was 1976 marudars era as a student of hogwarts in his 5th year he didn't even have the time to react. when memories came flooding in his head. He was a Slytherin. He was a pure blood His name was,..... Shit guess I just roll with it. Author's note: I don't harry potter all any of its characters.