Tom riddle x Harry
The twins and Harry aren't in slyitherin yet but Harry will be lord and heir to hogwarts and they hate dumbledore Harry parents aren't dead but dumbledore hide his parents so he thinks there dead. So he does get to hear his will when he is 12 even though it should have been earlier in his second year dobby is gifted to him by Draco and the twins also known as the demon twins save him from the Dursley's Harry is a parselmouth and he finds out he's a wizard at ten thanks to a snake him and Tom both have snakes.Harry's parents are James and regulus dumbledore only has James because they think regulus died but he didn't only a bit will be in second year but he will find out his uncles are Remus and Sirius so in third year when he meets Remus will things get better in second year he starts to remember that he knows Tom riddle so when he gets the diary Tom thinks he will hate him because apparently he killed his parents but he's not mad. Harry raises Tom in fourth year but not to Voldemort but to 15 year old Tom so it isn't weird…