I can't seem to transform my ideas into writing so i am putting them all here so that someone might like my idea and use them. I hope.
After getting kicked out by his uncle he runs into trouble in the park which results in him getting bitten by a vampire. coming to the realisation that he isnt safe at the dursleys Dumbledore brings harry to Hogwarts under the care of the staff. while there he gets to interact with the students and professors. VampHarry! Harry/Harem. Pre Hogwarts leading into the school years.
During his fight with Voldemort something strange happens and ends up throwing both Harry and Voldemort out of sync with the rest of the world. Beliving they both died Harrys friends move on with their lives, but what happens when he suddenly turns up in the middle of Hogwarts entrance hall the same age he left. HP/OC