A/N: I promised a trivia for this fic, so here it goes! The story itself will remain a one shot. It's completely up to you to interpret the rest of the story. However, this section will include other information that hopefully will help you to understand the world better.
Eternally: the Trivia
Universal Historical Facts
This AU fic takes place in England 2009. In other words, 12 years after the events in "Harry Potter and the Deathly Hallows". All characters have no connection whatsoever to the Naruto world and only the slightest connection to the Harry Potter characters.
Characters' Facts
Sakura is a muggle born witch. Her parents are unknown. She grew up in a Muggle Catholic Orphanage, where she became childhood friends with Naruto and Sasuke. Talented in Healing Magic, she especially excelled in Potion and Healing Charms. Bright and diligent Sakura joined the House of Ravenclaw when she entered Hogwarts.
Sakura's background story with Sasuke is somewhat similar to Snape and Lily. They live in the same neighborhood, and were childhood friends (also with Naruto). The difference? Sakura's feelings for Sasuke was romantic from the beginning, while Lily loved Snape as a friend.
Sasuke is a pure-blooded wizard that came from the prestigious lineage of Legilimens: The Uchiha Family. His entire family was massacred a few weeks before his first year in Hogwarts. Uchiha Itachi was charged guilty for the homicide. After the incident, Sasuke was sent to St. Mungo Hospital due to mental trauma. He went missing after he was released and no one saw him until he arrived at King's Cross Station for his first ride on the Hogwart's Express. He now lives with Orochimaru, his appointed guardian, in the northern part of England.
Dark and detached, Sasuke joined the House of Salazar Slytherin when he entered Hogwarts. He has a brilliant mind, he received Oustanding for every subjects of his O.W.L except for Care of Magical Creatures (which he got Exceeding Expectations). Although very intelligent, Sasuke has little sense of righteousness and humanity. He acts mostly according to logical judgment. Sasuke has affinity for offensive spells and dark magic. In case I had not been clear, Sasuke is an illegal Animagus, and was able to turn himself into a hawk. That's how he escaped from Hogwarts at the end of the story.
Naruto came from the same orphanage as Sakura. He is actually a pure-blooded wizard. His parents (Namikaze Minato and Uzumaki Kushina) died in the Second Wizarding War, leaving Baby Naruto on the door step of a muggle orphanage. Not even Naruto himself knows about this. Naruto belongs to the house of loyalty, the Hufflepuff, because his blinding faith for his friends (although the Sorting Hat had considered putting him in Gryffindor due to his bold prankster tendency).
Other Characters' Fact
Ino is a Gryffindor, but often have breakfast with Sakura at the Ravenclaw table.
Other Gryffindors includes: Hyuuga Neji, Hyuuga Hinata, Ten Ten, Rock Lee, and Inuzuka Kiba who is the Gryffindor Quidditch Captain.
Other Ravenclaw includes: Nara Shikamaru, Temari, Hyuuga Hanabi.
Other Hufflepuff includes: Akimichi Chouji, Juugo.
Other Slytherin Includes: Karin, Suigetsu, Aburame Shino, Gaara.
The Uchiha Family
The family came from an ancient line of pure-blood wizards, all who are gifted in Legilimency: the act of magically navigating through the many layers of a person's mind and correctly reading one's thoughts. The trait carries on to their descendants. Itachi is an expert Legilimens, which means he can perform Legilimency wandlessly and without incanation. He can also influence a mind that they invade. Sasuke can also use Legilimency nonverbally, although not yet wandlessly and to the point of controlling people.
Hogwarts Facts
Hiruzen Sarutobi as Headmaster
Tsunade as Potions Teacher and Head of Ravenclaw House
Orochimaru as Transfiguration Teacher and Head of Slytherin House
Jiraiya as Charms Teacher and Head of Hufflepuff House
Hatake Kakashi as Defense against the Dark Arts Teacher
Akatsuki Facts
Akatsuki is a group of rogue wizards and witches believing that the use of Dark Arts should be legal, as long there was a logical reason behind it. However, that was merely the outer shell of their organization. Most Akatsuki members are Dark Arts supporters and former followers of Voldemort.
Other Fun Facts
Are you writing this with Aragorn and Arwen from LOTR in mind? Sadly, no. As much as I like Aragorn x Arwen, I don't dig deep in the LOTR world. Any similarities are purely coincidences.
So, how did Sasuke escaped Hogwarts? He is an illegal Hawk Animagus. My favorite response from you is the Hippogriff. But it make sense, I wonder why I didn't even think about that.
Do you support Lily/Snape? I am a loyal fan of Lily x James, thank you. But I don't hate LS. In fact, I quite like Snape since HP Book 3, even after he kill Dumbledore.
Sequel, please? Maybe. But I have my other fic in priorities. As well as real life. If you have an idea to write Ravenclaw!Sakura and Slytherin!Sasuke, please do so. Don't you think this universe is marvelous?
What will happen in the future?
That's completely up to you. I honestly like to have several endings in my head. Haha.
THE END
Review, will you?