Hello, ITalkToSky here

Before you read anything else, please know that I have some problems with grammar as I am not a native speaker and hated writing. Studied English for a long time to understand academic papers, but I'm still not very confident in my writing. Let's be honest, I am not a very good writer, so please bear with me.

I love Touhou and also Mahouka a lot, so I decided to write this fanfiction with my OC added to it. OC will be kind of OP to a certain extent, but hey, Tatsuya is a hax in his own ways.

This will NOT be a harem fic. Although there will be multiple love interests, I will keep the number low and most will not be actively pursuing him to the extent of being a nuisance. Before I say any further, MiyukiXOC ship has been sunk. I pulled the trigger. *bam* *bam* the ship was sunk. Done.

Both the Touhou project and Mahouka Koukou no Rettousei belong to their rightful owner. Only my OC is my actual idea.

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"What is going on?!" A young man, seemingly at the end of his teenage years, exclaimed. His eyes were wide as if he had seen a ghost. Actually, this idiom couldn't be used anyway; he had already met Yuyuko and Youmu.

What he felt when he burst out of the side entrance of Scarlet Devil Mansion side entrance that connected the garden to Viole magic library shocked him. His hand grasped his cloth around his chest. He definitely felt it. After that strange flash of light, something changed in the surroundings. It felt faint from inside the mansion, but he felt it clearly when he went out. The concentration of mana in the atmosphere dropped very low. Nowhere in Gensokyou should it have that low level of magic power.

The sense of foreboding forced him to fly up into the sky and then the scenery he took in rebuked his sense of reality, or what was left of it after he learned magic. Instead of a huge misty lake in front of the mansion, a huge expansive forest stretched. The mansion itself seemed to be nested in a valley of some sort, but such a location does not exist in Gensokyou. All if it did not seem like an illusion. His mind began to turn.

Flashback

A bright light shone through the window as the curtain slowly pulled open without any apparent to do so. All one could hear was a small hum from a small wooden device with various runes etched onto it and the rustling of the thick teal coloured curtain. After a few seconds, the room was filled with silence. Then the figure on the bed stirred slightly. It rolled onto its back, straightening it and gently sat up. With eyes closed, two arms were raised into a stretch accompanied by a soft comfortable yawn.

The figure appeared human with features that were almost androgynous. The small frame and thin limbs clad in light blue pyjamas were complemented nicely with mid-back length hair. At first glance, the hair seemed to be bleached white, but upon close inspection, it shimmered slightly in the morning light as if the strands were metallic. The skin lightly concealed by the cloth was flawless white, but unlike corpses still retains its healthy tinges.

After waking up the muscles, the figure pulled itself away from the fluffy blanket onto the wooden floor and proceeded to carry itself to the bathroom. In front of the mirror, the eyes flashed open, revealing a pair of deep sky blue irises. However, these pairs of eyes were peculiar in that their colour was not one solid colour. The blue irises contained a periwinkle glow that slightly shimmered and shifted slightly depending on the angle, appearing almost prismatic. The facial structure showed a slight hint of a pout but nonetheless would strike the beholder as being beautiful. The figure proceeded with his morning routine.

His name is Lunaire Vivian Meister. Formerly a human magic use hailing from the famed Meister family in England, he delved deep into magic, growing more and more powerful. At the end of his study in England, he rediscovered the fabled and considered long lost "abandon food" magic, gaining the status as a member of the Youkai Magician race. The magic community did not take the news likely and the furious race for an engagement commenced between the most prominent magic families. With the magic growing weaker and weaker, the modern magic-users struggled to maintain a pure bloodline to ensure that the magic users down the line would continue to have magic. Magic-users who awaken as a member of Youkai Magician numbered a few and every one of them was old, so it is obvious how such news would be received. Unable to resign himself to being nothing but a breed stock, with the help of his old butler and at the tender age of 19, he gathered his research and booked a flight to Japan, never to return. Obviously, his family had plans for him and sent the pursuit party, ironically led by his favourite elder sister. His butler lost his life protecting his master when the group was intercepted just on the outskirts of Kyoto. Although as a silver lining, his family underestimated the power of a Youkai magician by sending the squad too small with too few elites, allowing Lunaire to wipe the floor with them. After various happenings, he was offered a place in Gensokyo by none other than Yakumo Yukari herself. Without lingering feeling, except a grudge against the Meister family that is responsible for the death of his father-figure to whom he owed his life, Lunaire set out to Gensokyo. The stories of what entailed were for another time, but he settled himself temporarily as a live-in magician in Scarlet Devil Mansion. Although he considered it temporary at first, he stayed there and integrated almost seamlessly into the Scarlet household already. Occupying one of the guest rooms upstairs, Remilia allowed him to utilise part of her library and underground labyrinth as his laboratory. It was only a matter of a few years before he gave up on the idea of moving out.

After a proper bath, Lunaire began to put on his outfit. In the evening he had to go to the village for some materials for his experiment, so the one that blended in would be better. He took an example of his outfit from Morichika Rinnosuke with a few minor differences. The outfit's main colour scheme remained the same, but the white was replaced with very pale Alice blue and the sleeves were coloured royal blue. The sash that held the outfit together had a metal plate the size of a palm, etched with stars inscribed within each other, pentagram, hexagram and heptagram in order, embedded within. In addition, this outfit was enchanted to the very limit the special fabric could take. He also wore a necklace with small and unadorned deep blue crystals.

After getting dressed up, he gathered and tied his hair into a ponytail and leaving a few bangs to fall to the sides of his face and one right between his eyes. With all the preparation set, he reached into his drawer for his standard equipment, personal grimoire and a handful of spell cards. Tucking something into a small pocket in his sleeves and the rest in the pocket dimension, he turned open to the door and walked down the empty corridor of Scarlet Devil Mansion. It was a strange morning. He felt that something was different. Most residents of this mansion are not active during the day, except for Meiling and Sakuya. However, the mansion today felt a little bit more…lively.

The fairy maids floated around doing almost nothing productive as always. Even though they always searched for something to humour themselves and were very noisy, they shouldn't be in the morning. Just like most residents here, they were not morning…fairies? Yet, for some reason, they seemed energetic.

Deciding that minding fairies' business will not get anything for him, he decided to carry on his way. Looking out the window, he saw that it was quite early and decided to head toward the library. The sun was quite high in the sky, but it was a bit too early for Sakuya to prepare his breakfast, well more accurately brunch. Living for a decade or so with nocturnal people tended to mess with his biological clock.

Lunaire narrowed his eyes comfortably as his muffled footsteps as he navigated the hallways seemed to lull him to a certain sense of security. When his feet carried him to the library, he was shocked.

"Wait, wait, wait! Stop! I am here with Alice, da ze! Not here for the books…not now…" The blond in generic witch outfit strengthened her arms in front of her and frantically waved.

The blond witch was Kirisame Marisa, a very frequent book burglar who arbitrarily invited herself in and took many books from this library countless times. Often to the exasperation of Patchouli, our resident librarian of the Viole Grand Magic Library, wards and barriers serve no purpose to deter Marisa. She simply broke in boldly, shattering all the magic defences in the way before bugging out as quickly as she came. The only way effective was to intercept her in person, but with Patchouli health problems and somewhat slacking guard, Meiling, Marisa had almost free-reign in the library without the support from Sakuya. When he appeared, he took up the role to properly intercept Marisa if he came across her, which usually ended up in a spectacular danmaku duel or Sakuya and him chasing her through the premise. Good times.

"Alice? Ah, she is here for the doll's sword." Lunaire graciously decided to ignore the latter part of her comment.

"Yes, yes!" She replied lazily and followed him as he headed for the centre of the library.

Flicking his right wrist to the side a little bit before making a gesture to grab something, Lunaire's seemed to disappear into a small black hole. A second later, his hand emerged to reveal a neat wooden box that was properly bound with rope. The box has a small pentagram inscribed into the lid.

The pair continued in awkward silence as no one was able to strike a conversation. Lunaire found it extremely awkward to start talking to someone who he always chases around all the time on sight. However, he also found it relaxing not to do so, especially not in the morning when he felt fresh.

What greeted his sight were the figures of Remilia and Alice entertaining their morning tea time with some snacks prepared by Sakuya. It was very strange to see her up in the morning. Boredom might be a factor that forced her to jump at any source of excitement in sight, it seemed, enough to make her wake up early. And of course, if Sakuya is not up when her mistress is up, then Sakuya is an imposter. No question asked.

"Good morning, Alice, Remillia and Patchouli too. Thank you for your efforts, Sakuya." He lightly greeted every member presented.

"It's nothing." Sakuya bowed almost exactly 45 degrees. It seemed that no one could find fault with this perfect maid.

Lunaire looked around and found someone who he least expected in this Scarlet Devil Mansion.

"Reisen? Hello? Um, why are you here?" He asked curiously as frowns appeared on his face. This was not due to his dislike for Reisen, but for other reasons. Desperately trying to maintain a stoic face, his left hand grabbed onto his right in a vice-like grip, while the right hand itself twitched. Lunaire was a fan of animal-eared girls, courtesy to Ran's tails. He could never forget that warmth and softness. Snapping out of his daze, he refocused on Reisen.

"I believe you ordered some medicine, so my master asked me to deliver it. Don't you remember it?" Reisen tilted her head before bringing a box in her bag forward.

"Oh, yes! Thanks. Completely forgot about it." He rubbed his head embarrassingly.

Many of his experiments involve medicines from Eirin so he always tries to keep some in stock by occasionally ordering some to be delivered to Scarlet Devil Mansion.

"Talking about the delivery, here is the sword you asked for your doll. I enchanted it to increase its durability, sharpness and also added in an ability to cut through barriers. Not going to lie, but that thing is pretty powerful, considering that it is a weapon meant for your doll. As you ordered, it is also capable of being a proper magic conductor for normal magic. Since you meant to use this as a weapon of last resort for Shanghai, I added in wind magic circuit integrated into it for increased mobility and the ability to fire simple vacuum blades for good measure. For free of course." Lunaire began his explanation for the item in a wooden box no larger than the shoebox in his hand. Alice's face brightened as a smile graced her face. She thanked him before unboxing the item. She seemed to like what she saw.

The blade was like a miniature rapier. The golden spiral handguard was sparking from sporadic decorative jewels. Most of the jewels are green and blue. The hilt was wrapped with dark blue cloth. The scabbard was also dark blue, but trimmed with gold alloy and decorated with silver cross motifs. Alice manipulated Shanghai, a doll that frequently hangs around her, to pull out the rapier, revealing a flawless silver narrow blade, which seemed to glimmer lightly.

Reisen and Marisa watched interestingly as Alice began to make Shanghai do some advanced sword manoeuvres that were both graceful and deadly. Remilia seemed excited as always to see something new, while her maid watched over her warmly. The resident bookworm though showed almost no interest in the show.

Before the atmosphere can get merrier though, Lunaire hissed as everyone looked more alert. The feeling in the air somehow managed to suddenly appear and spooked every breathing soul in this room. It seemed almost alien but unquestionably felt like magic.

"Everyone, get…" With his word cut off, the world was coloured in white.

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That's it, all I'm going to write for the prologue.

Hope you like what you read and I apologize for the lack of Mahouka action in this chapter.

Edited by: solacefall