Harry Potter/ Zero no Tsukaima Crossover

Dear Professor McGonagall,

I am honoured to see one of my prized students being requested to join a fellow school of Magic, but I am also saddened to say that I won't be able to let Sir Harry de Montmorency join you as he is already in his second year here and would be detrimental to have him interrupt his studies.

I am also forced to dictate this letter to Sir Harry himself since the Language used by you is currently unknown here in Tristain, for this I once again beg your forgiveness as I am forced to decline your request on Sir Harry's behalf, although we both thank you on helping us discover his real name of Potter even if he will maintain the one of his adoptive family he gained after appearing in the Montmorency Household when he was still a five-year old boy that curiously only knew his name.

I would also invite you and your Headmaster to visit our Academy of Magic to compare notes as to create a more 'Friendly' acquittance between our schools.

Wishing you the best of days,

Headmaster Osmond, Tristain Academy of Magic, Tristain.

The aftermath -

It had not been difficult to create a portkey tied to the destination of the letter to bring both Minerva and Albus in front of the entrance of the foreign school of magic, harder had been the difference in language, but an useful local Spell to impart the right linguistic knowledge resolved the issue.

"Thank you for accepting my invitation, this is Chuchu, my familiar," Osmond had said, greeting the two wide a benevolent smile.

"Thank you for inviting us, Headmaster Osmond, I am sorry to not have my familiar Fawkes with me, but he happens to hate traveling by portkey," Albus answered.

"That sounds like an interesting spell," the other old man replied.

"Merlin, they sound like twins separated at birth," Minerva muttered with a sigh.

"OH MY GOD! YOU ARE REALLY HERE!" a young man yelled with wide eyes.

"Saito, please! Stop making a scene!" a short girl with long pink hair said in annoyance.

"I know you, my boy?" Albus asked with twinkling eyes.

"He is Saito Hiraga, familiar of Miss Louise de la Valliere, he was curiously eager to meet you...and between us, when we discovered Sir Harry's name as Potter he even fainted," Osmond said with an amused chuckle.

"HEY! I grew up with their books! Do you know how it feels to meet them in person?" Saito said with an embarrassed blush.

"I beg you pardon? Books?" McGonagall asked, dumbfounded.

"Apparently, if we have to listen to him, my brother should be a character from a series of books in Saito's world," a young girl with blond hair said as she joined the scene with a young man with green eyes and a black cloak over his school uniform.

"His world?" Albus asked with a raised eyebrow.

"Mister Potter?" Minerva asked.

"It's 'De Montmorency' now, Miss McGonagall, after discovering that I possessed Magical Powers my sister's family decided to adopt me so to have a male heir to the family," Harry answered.

"It was unheard of, but since my father could not sire any more children after a wound he received during an hunting trip he was desperate enough to do this, but after seeing Harry here becoming a Line Class Magic User after his first year here, well, I had to relent and accept him," the girl said with a superior smirk.

"Wow, I can feel the love, sister," Harry said in sarcasm.

"Line Class?" Albus asked.

"It means that I can use two elements, in his case water and fire. A Triangle Mage can use three, a Square one can use Four and so on," the pink haired girl answered.

"And someone can use zero...right, Louise?" the blond girl teased.

"Shut it, Montmorency!" the pink haired girl, Louise hissed.

"Sister, please be gentle, she doesn't deserve that," Harry said, crossing his arms and scowling at his sister.

"Okay-okay, but as a younger brother you should be the one showing a more submissive character," Montmorency said with an huff.

"Someone needs to reign you, Mon-mon!" Harry said with a smirk.

"ARGH! Why Saito had to teach you that nickname! It's infuriating! It's so ugly!" the girl said in anger.

"If it helps, I find it very cute, my dear, no need to feel insulted," McGonagall said with a kind smile.

"See? People loves that! I find that cute myself," the raven haired boy said with a superior smile.

"Tch!"

"I am surprised to see you older than what you should be, Mister Harry," Dumbledore said.

"Here Time flows differently maybe, I am fifteen and will turn sixteen in the next six months, I don't know actually, but it's the most logical conclusion we had," Harry answered.

"What's this thing about the books though? You still have to answer us, it seems a little farfetched," Minerva asked with narrowed eyes.

"Apparently, you just used a portkey to come here while when Louise summoned me here to be her familiar I moved from another dimension or something, this explains why to me you are characters from a book while instead you are directly in front of me." Saito answered with a shrug.

"Let's take a seat, I fear that this may take a while..." Harry said with a sigh.

Finding an empty table in the front of the main entrance Albus, Minerva, Osmond, Harry, Saito and Louise and Montmorency sat together to finally answer some due questions.

"So, what makes you think that to Mister Saito we are characters from a book?" Albus asked.

"Saito?" Harry said.

"You are hiding a Philosopher Stone in the third floor of your school," the young man said.

"How do you know that?!" Minerva asked with wide eyes.

"I literally know the seven books by heart, you have a Cerberus, a Devil Snare, Flying keys, a giant set of living chess pieces, a Troll, a riddle about potions and the Mirror of Erised guarding the Stone, the Mirror needs someone who wants the stone but not to use it to take the object out," the Human Familiar answered.

"Albus?" McGonagall asked with a very worried tone.

"All correct..." Dumbledore answered with a whimper.

"And that is only the first year, mind telling them the rest?" Harry said, a silver snake with green circles around its eyes slithering around his arm as he spoke.

"What's that?" Minerva asked.

"My familiar, Gilgamesh," Harry answered while petting the long snake.

"Second year...ah! The Basilisk and the Chamber of Secrets!" Saito said after a short pause of thought.

"BASILISK?!" Albus yelled.

"Yep! Lockhart is a fraud, he usually obbliviate people and steals their accomplishments before writing a new book, in third year Sirius Black evades from Azkaban and shows everyone that Peter Pettigrew is alive, the REAL Secret Keeper but fails to give him to the Aurors because in the meantime Remus Lupi turns into a werewolf." Saito answered.

"Anything else?" Minerva asked with a pained sigh, pinching her nose in frustration.

"Fourth Year, Triwizard Tournament, in the books Harry's name comes out and YOU force him to compete even if this put him against Seventh Year students from Hogwarts, Beauxbatons and Dumstrang, an Hortail Dragon and a golden egg for the first task, mermen in the black lake for the second and a maze for the third, Voldemort gains a new body because Alastor Moody is not the real one bu Barty Crunch Junior under Polyjuice so to kidnap Harry, if he stays here I would do something to stop that from happening if I were you," the young man said.

"Are you writing down everything?" Albus asked, watching McGonagall furiously writing down everything on a piece of parchment she transfigured from her tea cup (Shocking the ones from Tristain in the meantime).

"We may need more details..." the Deputy Headmistress answered.

"Fifth year, Umbridge is sent by the Ministry to govern the school, they use a Decree to have her inside, use Iron Fist on the school and force Dumbledore out to evade capture, use a blood quill on the students as punishment, the Ministry moves a defamatory campaign on you and Harry to discredit your saying that Voldemort is back, they even sent Dementors after Harry to force him to either use Magic and get expelled or Die," Saito said.

"An amazingly quiet life, that's for sure..." Harry said with a sneer.

"At least you are here instead," Montmorency said with a tender smile, taking his hand in hers to console him.

"And where was I when all these disgraces happens?" Albus asked worried.

"You tell me...are you trying to manipulate me into a Martyr so to let your Dark Lord kill me and take the glory?" Harry asked back with a glare.

"WHAT? NO! WHY WOULD I DO SOMETHING LIKE THAT!?" Dumbledore yelled scandalized.

"Well, sorry to be the bringer of bad news, but almost everyone reading the books, me comprised, consider you either a complete idiot or a manipulator even more EVIL than Voldemort...the most used excuse is "For the greater Good" or the fact that you blindly follow the Prophecy Trelawny spat out that night," Saito answered.

"I AM NOT EVIL! AND I AM NOT A MANIPULATOR OR A FOOL! I THOUGHT THAT LEAVING HARRY TO THE DURSLEY WAS A GOOD IDEA, EVEN IF LEAVING HIM TO A LIFE OF HARDSHIP!" Albus yelled, still more horrified than angry.

"Well, from what he told me, my life would have been a mass of feces had I remained there or gone to Hogwarts," Harry answered.

"You are helping us, if we use the Prophecy's words, we will be your "Hands" to defeat Tom, apparently, the power he knows not is not Love but..."

"But someone already knowing what will happen, yeah in Fanfictions that is used a lot too," Saito said.

"Fine, you won't come with us, we understood that! but please tell us as much as you can, we'll use that knowledge to defeat the Dark Lord for you, so fulfilling that blasted Prophecy and be done with it," Minerva said.

"Good thing you didn't bring Severus Snape, he is a traitor that will kill Albus for no reason," Saito said with an evil smirk.

"He will?" Albus asked with a sad expression.

"He believes it will be the only way to protect Draco from Voldemort, but considering his character, I believe he was even too much ready to kill you," the human familiar answered.

"Please start from the first year of Mister Pot..Montnmorency, we need as many details as you can give us," McGonagall asked with a groan.

"Okay, first thing, Quirrell will have the spirit of Voldemort in himself when the school starts, he will always wear a turban to hide the fact that Tom's face is sprouting from the back of his head..." Saito said.

"Oh, Merlin...if this is only the FIRST year..." Albus said with a whine.

"It only gets worse, get ready," Harry said trying to sound comforting, but making the two whine louder.

"Sucks to be you," Saito said with a shrug before starting his talk about the futuire seven years of Hogwarts.

Once done, after three long hours of expositions and practical example of how many ways the ones reading have resolved the various issues in the books with their "Fanfictions" to add further informations, the Headmaster and Deputy Headmistress returned to Hogwarts with several feet of parchment detailing practically everything important that will happen; the curious thing was that Albus would be seen questioning several past students and friends about his behavior past and present, having grown the suspect of appearing like a Manipulator...he won't like the answers as he will enter a short period of deep depression.

And while Severus was almost giddy at not having the spawn of James Potter 'polluting' the school, he could not shake off the feeling that the other professors, Hagrid comprised, had started looking at him with various shades of contempt and distrust, he was especially insulted whenever Filius blatantly used checking spells on his food and drink whenever the Potion Master passed him something as if believing Snape ready to poison everyone in his vicinity.

The last straw was seeing Pomona pocketing a Bezoar and rising a quick Shielding Charm around her chair before sitting near him at the staff table during one of the monthly meeting between lessons.

"Okay! This is too much! Can I ask why you people act like fearing me to throw a Killing Curse at the first occasion you turn your back at me?" Snape asked with a growling tone.

"Curious for you to make that EXACT example, Severus," Vector said with narrowed eyes.

"I was not the one to give to the buffoon of Quirrell some Draught of Living Death before going on who knows what kind of mission, last thing I heard the man died by Albus' hands, mind explaining then why I am the one treated like a killer?" Severus asked.

"It was necessary to finally kill Voldemort, Severus, but I wonder...how would you teach Occlumency to an hypothetical student?" Albus asked with a barely narrowing of his eyes.

"I would tell him to relax, clean his mind and try to stop his mind from wandering around, to try and have as little thoughts as possible and to do this every night before going to sleep before trying light Legilimency to have the student understand 'how it feels' to have someone enter your mind, growing stronger in the attacks gradually so to build his or her defences," the Potion Master answered.

"Uhm...so you wouldn't just point your wand, yell 'CLEAN YOUR MIND!' and then blast at full power through the student's mind?" Minerva asked.

"What? Only an idiot would do that, that would signify opening a mind more instead of developing defences," Snape answered with a sneer.

"I see..." Albus said with a twitch of his beard signaling the momentarily formation of a scowl.

"What has that dunderhead of Potter told you? It all started after you went to talk to him," Severus asked.

"Here we are, sorry, old bat, but I have some essays that I want to re-check, and the education of my students comes before one of your childish 'I hate James Potter' tantrums, and be warned, I WILL control why you take away points from Ravenclaw, if I find even the smallest discrepancy, you will know WHY every single circuit of Dueling, both Legal and Illegal, prohibited me from showing my face there ever again," Filius said with a threatening tone that had the other professors cringe.

"I will go too, my plants have an higher priority than a school bully, I'll see you all later, good day Headmaster, Minerva," Pomona Sprout said while following Flitwick, "Casually" kicking Snape's chair as she left.

"I predict an hard time for you, I'll tell you now so you won't be forced to eavesdrop and ruin someone's else life," Trelawny added as she too left the room with Vector and the others.

"I used to like James and Lily, ya greasy git, dead by your hands...I used to defend ya when people said ya were an arse-hole, I guess they were right instead," Hagrid said, surprising the others by leaving the room with his nose stuck up in a daintily manner.

"I won't stand this, I expect excuses once you will have understood that is all that idiotic child's fault and that he told only lies," Snape said, leaving the staff room with a furious expression in face.

"Did we exaggerate?" Minerva asked.

"You are not the one he used the Killing Curse on!" Albus said.

"Still sour about it? It seemed that it was your plan from the beginning," McGonagall answered.

"Apparently that Curse on the ring had my brain rotting just like my arm, I am happy to have destroyed it, with the Resurrection Stone gone and the Invisibility Cloak on another planet no one will be able to obtain the three Hollows, I personally erased the Location Of Harry's planet from Hogwarts 'Memory' so no one will find it," Dumbledore answered.

"The Dark Lord is gone, now we only need to deal with the remaining Death Eaters," the Scottish woman said with a sigh.

"That can be arranged, seen that they have not learned the lesson the first time, I guess that a new staying in Azkaban will help them learn that being Evil is not a good choice," the old man said.

"And Severus?"

"He can splice himself for all I care!"

"ALBUS!" Minerva yelled scandalized.

"He killed me! After everything I have done he takes and kill me to protect a pestering brat that turned into a Death Eater just to make daddy proud!" the Headmaster said with a childish whine.

"Really, Albus..." Minerva muttered with a pained sigh.

"...I am not an Evil Mastermind that likes to manipulate people, right?" Albus asked with a pleading tone.

"For the last time, Albus! No! You are not!" McGonagal said with an exasperated tone.

"Just checking..." the old man said while looking down.

Any further discussion died down when a loud explosion rocketed the whole Castle.

"It came from Severus' office!" Madame Pomfrey yelled as she passed in front of the room to alert the two still inside.

"What happened to the dungeon bat now?" Dumbledore grumbled.

"Seriously, Albus..." Minerva muttered as both darted down towards the dungeons.

They will be too late unfortunately, the cauldron the Potion Master was using showed up being too thin, making the Calming Draught he was preparing explode on his face and showering him with white-hot shards of metal that almost teared his body in half.

Before dying from blood loss he uttered his last words, puzzling the Mediwitch and both Minerva and Albus with its meaning.

"Why...I die...in every chapter...damned...dunderhead author..." Snape muttered before letting his head fall back as he died.

The sad thing was that during the funeral confetti were summoned from almost every wand present as the coffin was slowly lowered in the hole.

At the same time, in Tristain, Harry was going out with the older student Kirche, and contrary to what people thought, she didn't seem about to let him go any time soon, especially with the smile she showed every time the two were together...the marriage several years later helped cement the fact.