Harry, Ron, Hermione and Draco, the four of them returned to 1991 from the tragic Battle of Hogwarts due to some special magic or some special magical reasons, and even met their former selves. Harry got the chance to save his loved ones, and Draco chose to join Harry and his group, abandon the Death Eaters, and start over. (It is estimated that this will be a very long novel, leaning towards the original novel. The theme is "love", which includes both love, family, and friendship.) Remus has no cp, there are sbrb elements mentioned, and the rest are official.
Purpose: Dream come true