A/N Several of the statements in this story regarding Lin's eye, including the phrase "Third eye", were derived from the Akumu no Sumu Manga. More information at the end of the chapter.

Disclaimer;

Me: I don't own Ghost Hunt- obviously. That's why I write fanfiction about it.

Lin: But she really wishes she owned it.

Me: Yes, yes I do.

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Koujo Lin absolutely abhorred headaches. They were distracting, annoying, and downright painful. They prevented him from performing as efficiently as he needed to in his line of work. That was something unforgivable as the bodyguard and assistant of Oliver Davis. He needed to be at the top of his game at all times, he always had to be able to detect trouble, and always had to know whether or not circumstances held any sort of danger for his charge. These detestable things called 'headaches' made it difficult for him to concentrate, let alone keep a trained eye on their surroundings.

He knew exactly why he got these sharp pains in his skull, and also knew that he could do nothing about them. They were linked to his third eye; his right eye, the one always dutifully covered by the lock of black fringe positioned over it like a veil. His right eye was blind to the type of light that his left eye could see; visual light, although it was not blind to other sorts of light. He had something called 'Electromagnetic Vision', he could see things that others could not, radio waves, electromagnetic waves, and other sources of light. He got headaches because humans were not meant to be able to see the otherwise unseen. His mind couldn't process what his right eye was detecting so the headaches were it's way of trying to force the information to leave it's vicinity.

This made the headaches more intense, as Lin could not easily forget what information he had seen, when he saw the same things every time he glanced at something using his covered eye. It was a constant fight between human anatomy and his powers as a psychic. Most of the time it seemed that his anatomy would win out.

Lin had a headache now, or more like a migraine, as it was proving to be more painful than the others that he'd experienced as of late. He'd been staring at the monitor of his laptop for several minutes, trying to make sense of the words that he typed on the word document regarding SPR's last case. The text muddled together in his mind, it all looked the same, and Lin realized that if only the damn overly persistent ache in his cranium would just dissipate, he'd be able to focus and get his work done.

"Lin," A concerned feminine voice said cautiously from behind the dark-haired omnyouji. He turned around to face the voice, his hand pressed to his right temple. The voice belonged to Mai, the sixteen year old girl whom Naru had hired as a replacement assistant in Lin's stead after he'd been injured while protecting the aforementioned girl. Naru had kept her as an assistant and an investigator. Though he'd never given Lin any inclination as to his reasoning for hiring her, Lin thought that he knew precisely why, although he refused to let his mind wander there. Instead he glanced down to Mai's cinnamon brown eyes and saw the worry there; she could tell that there was something off about her colleague today, "Is something wrong? You keep holding your head like you're in pain." she finished, taking a step towards him from her perch on the couch behind his desk.

"I have a minor headache. Nothing to be concerned with. I get them fairly often, so I'm used to it." Lin said, warily watching the girl as her worry changed from concern to anger and then back to the originally felt emotion

"You get chronic headaches? Have you seen a doctor about you this, Lin-San?" Mai asked, her voice hard as if she knew the answer already but was dreading hearing it.

"I have not. And even if I chose to, what would a doctor do, hmm? The only thing that one could do for my headaches is provide me the contact details for the nearest asylum. No medicine can defeat what causes my migraines." Lin replied, leaning forward on his hand as another, sharper, wave of pain shot through his head, eliciting a gasp out of the normally stoic Chinese man.

"Lin!" Mai yelled, rushing forward and placing a hand on his shoulder. His body was stiff, as if he was bracing himself against the pain, and with the loud and agonized sounding gasp that he'd let loose, she wouldn't be surprised if he was. Lin did not respond to her touch in any way, he simply concentrated on calming down his ragged breathing. He sat there with his head in his hands for several minutes, waiting until the migraine subsided into a dull ache in his temples. When he felt well enough, he turned his steely gray gaze onto Mai.

"I'm fine, Mai, though I'll admit that these pains usually aren't so severe. This one simply caught me off guard." He admitted, gently shrugging her hand off of his shoulder. Mai sighed deeply, taking a step back.

"What did you mean when you said that medicine can't help you?" She asked, hoping that he'd feel inclined to answer. Lin turned back to his laptop, determined to finish filing the case information. Although it soon became apparent to him that Mai wasn't going to back down, as the young girl had not moved an inch since he turned away from her.

"Mai, I don't get headaches because I'm sick. It's nothing related to a disease, either. That's why medicine won't help me." He stated matter-of-factly. He turned around to gauge her reaction and fought the urge to smirk when he saw her brown eyes widen. She had realized the underlying source of his chronic headaches.

"The headaches come from your powers? But how?" Mai asked, staring hard at him as she tried to figure out the answer for herself. Lin was about to reply, but was cut off as a third voice joined the conversation.

"Lin get's headaches due to the fact that he has something called electromagnetic vision. I'll explain it on terms that even you can understand, Mai." The voice said, and Lin and Mai turned to face Naru (aka Kazuya Shibuya aka Oliver Davis), who stood in the doorway of his office to the right of Lin's desk. He had a black notebook in his hand and his head bent towards it, as if he was reading whatever he had written there. He gave no indication that he had spoken until Mai let out an annoyed huff. When she did, he turned his ocean blue eyes on her and gave her a condescending look.

"Mai, patience is not one of your virtues," he said, glaring at his younger assistant. If he had been paying more attention, he would have heard his older assistant mutter the word 'hypocrite' into his hand. "As I was saying, Lin has electromagnetic vision-" Naru started again, but much to his annoyance, he was cut off.

"Yes, I heard the part about him having elect-er whatever vision. There is no need to repeat yourself." Mai muttered, still annoyed at her Boss's earlier insult of her intelligence. Naru's eyes widened then narrowed as he pinched the bridge of his nose with his fingers, something that meant he was supremely annoyed.

"Mai, do not childishly interrupt someone who is trying to explain something so that a person with your level of intelligence can understand," Naru said scathingly, annoyance prominent in his voice, "it would be wise of you to listen so that I do not confuse and cause you to ask pointless questions." he added, walking into the room and taking a seat on the couch that Mai had previously vacated. Mai glanced at Lin, who shook his head slightly, as if silently telling her not to continue to antagonize Naru. Mai took his unspoken advice and sighed.

"I'm sorry Naru." Mai forced herself to say, giving her boss a false smile, one that he, of course, did not return. Instead, he sighed.

"As I was saying, Lin has electromagnetic vision which means that he can see radio waves and other types of light that otherwise, humans cannot see. His mind doesn't understand what it's focusing on, at least, the rational part doesn't, therefore, it tries to protect Lin from the things that he shouldn't be able to be aware of. It causes him headaches because he can't forget things that become imprinted in his mind; he sees these supposed to be invisible light sources every time he looks out of his right eye, that's the reason he keeps it covered with his hair; it stops him from seeing everything, thought it's obviously not an ideal solution and doesn't help him much." Naru replied, without pausing to take a breath. Mai stared hard at Lin again, then chose to ask the question that had been eating at her mind.

"Lin, would you mind showing me your eye? I've never actually seen it, and I guess now I know the reason why," Mai said cautiously, chancing a look at her stoic colleague. He'd stiffened in his chair, his eyes not meeting hers, "It's fine if you don't want to show me, I was just curious, that's all." She added, praying that she hadn't upset or offended him. To her surprise, Lin moved the lock of hair away from his eye and gestured towards her. She took the few steps that it took to get to him slowly, coming to a stop to the left of his chair. He raised his right eye upwards, and she gasped; it wasn't wasn't gray as she had expected it to be; it was a murky blue.

"Lin, why is it blue?" She asked, her voice gentle. She watched as Lin closed his right eye again, letting his black fringe fall back into place. He sighed deeply, and glanced at Naru, who for some reason, nodded.

"Mai, have you not figured it out, yet? I'm technically blind in my right eye; I have electromagnetic vision in it, though I can't see the same type of light that my left eye sees." Lin said slowly, hoping that he hadn't confused the girl standing beside him. She stared back at him warily.

"Does it have any link to your shiki? She asked as images of the white lights came into her mind. To her surprise, Lin stuck his fingers in his mouth and whistled lightly, wincing a little at the noise. His shiki appeared, circling around their master's head.

"When you look at my shiki, what do you see?" Lin asked her, raising his hand up and coaxing one of them down from above him; it stretched out and coiled around his wrist. Mai stared at it, mesmerized by the flexible white light. She glanced up at Lin's eyes again, and noticed him staring at her; she'd neglected to answer his earlier question.

"When I look at your shiki, I see little white orbs of light that float around; they don't have a solid looking form, and they have no limbs." She said, looking up towards the ceiling where the other four shiki still floated. They all looked exactly the same to her. Lin glanced at Naru and laughed, much to Mai's surprise.

"You're not the only one who sees white lights; Naru and everyone else, other than myself, are only able to see a collection of small lights." Lin said, pausing to gently stroke the shiki wrapped around his wrist, "I see their true form; they are made up of electromagnetic waves that when exposed to visual light, will show a different form to those without electromagnetic vision. That form is what you see." He finished, carefully shaking off the shiki on his wrist and watching it float back up to the air above him. Mai's eyes followed it closely it as it began to participate in the circular rotation around Lin's head.

"How can you see a different form than everyone else? You only have electromagnetic vision in one eye, so how can you not see what we're seeing?" She asked, still not fully understanding the extent of Lin's power. He sighed, steeling himself for the complicated explanation.

"I meant that I can see both their true form and the form that is projected for those who can't see electromagnetic energies; the form I see depends on whether or not I am using my right or left eye. So to answer your earlier question, yes, my eye does have a sort of link to my shiki, if I use my right eye to look at them, I see something different than the glowing white orbs we discussed." Lin stated, rubbing his head again as another wave of pain shot through his skull; he really was tempted to try some pain reliever, if there was even a slight chance that it would work. He glanced at Mai then as an idea came to his mind.

"Mai, there's a bottle of pain reliever in the left drawer of the desk in my office, would you mind going and getting it for me?" Lin asked her casually. The young girl didn't respond in any way, she just continued to stare at the bound ghosts still continuously floating above her and her colleague's heads, as if she were mesmerized by them, and truth be told, in a way, she was. It was their job, her's, Lin's, and Naru's, to hunt ghost, and here Lin was keeping them as minions. The comical part of her brain briefly wondered if Lin had trained them to do tricks,. The thought almost made her chuckle, until she felt Lin's eyes on her; she slowly turned and met his steely gaze.

"Lin-San? Is there something that you need?" She asked innocently, giving her co-worker her full attention.

"I asked whether or not you would be willing to go and retrieve the bottle of pain reliever in my office- it's in the left desk drawer." Lin repeated, a barely perceptible note of impatience in his voice. The young girl's eyes widened momentarily as she realized that she had tuned Lin out so completely, but nonetheless, she scurried off towards the office to the right of his desk. Lin turned towards Naru and sighed. Noticing this, Naru gave him a quick once over with his eyes; he looked tired, something that he easily covered up with good posture, but not something that he could hide well from someone who had known him for many years.

"Lin, how long have these headaches been this excruciating? I highly doubt that this is the first of the sort that you've experienced." Naru reasoned carefully, afraid that if he pushed Lin to answer questions, his assistant would blatantly refuse to answer them. To his surprise, Lin closed his eyes and took a deep breath.

"I've been experiencing more intense migraines for about a month now, but I don't for sure as to why they are suddenly getting worse. I've been getting headaches since I was a teenager, in fact, I began getting them even before I met you and Gene, although, they've never been quite so debilitating."

Naru nodded his understanding and relaxed against the couch, propping his elbow against the arm rest and capturing his chin in his hand, something that the young paranormal researcher often did when thinking very deeply about something.

"Lin, do you have any idea what originally brought on the headaches? You said that you were a teenager when they first started- exactly how old were you?" He inquired quietly as his mind muddled over all of the information that he'd ever read over in medical journals, trying to recall anything that could provide insight into his assistant's worsening condition. He watched as Lin pushed his chair out from under the desk, and slowly rose to his full height. His shiki followed his motions, continuing to float dutifully above their master's head. The taller man turned his gaze to his young charge and sighed warily, meeting his ocean blue eyes once before turning his head away to look out of the window directly in front of him.

"Oliver, is there any particular reason why you feel the need to ask me so many questions? I understand why Mai would want to know- she's an exceptionally curious person, but you've never felt the need to interrogate me. What changed?" He asked quizzically. Naru chuckled dryly, surprising himself and his assistant.

"Is that what this feels like to you, Lin? An interrogation? It's hardly that- I just want to make sure that you don't pass out on the floor, I'm afraid that I'd have to dock your pay if that ever happened. Becoming ill on the job is bad for business, I'm sure you're aware of that." Naru replied slyly, a smirk on his face. Lin tried to fight off his own half grin, but failed.

"Luckily Naru, you don't pay me; Martin and Luella do. Or had you forgotten about your poor parents? By the way, you haven't called your mother in weeks, have you?" Lin retorted, phrasing the last part like a question as he glanced at Naru with feigned innocence, the smirk widening into a sadistic smile, "Luella will probably get so worried that she'll make Martin drive her all the way from England to Japan. Maybe I should call and inform her that her son is overworking himself again and not sleeping." He threatened, watching as his young charge's Cerulean blue eyes widened and his jaw dropped slightly. Lin genuinely laughed at his friend's obvious terror of the looming threat of an unplanned visit from his nagging and overprotective mother. Hearing the sound of being laughed at, Naru snapped out of his daze and schooled his expression, forcing himself to put on his mask of stoic indifference once again.

"I'm not an idiot, Lin- I know you're bluffing. You wouldn't dare call Luella, seeing as she'd force you to rest and go see a doctor for these headaches, and you know that you wouldn't be able to refuse. When that woman wants something, she get's it. Even Martin gives into her whims." Naru proclaimed, he hoped that Lin would remember that a visit from Luella would not only cause him irritation, but the the stoic Chinese man standing in front of him as well. He knew how much Lin liked order and serenity, and with Luella around, their lives would be anything but. Likewise, the dark-haired omnyouji seemed to realize this as well, he stopped looking out the window and met Naru's blue gaze once more.

"You're right, I was bluffing. Although, I think you were aware of that already," Lin acknowledged warily, knowing damn well that though Luella had his and her son's best interests at heart, she was a very forceful person when in came to people refusing to succumb to her motherly instincts. "I'd never do anything to sabotage the relative quite of the office, it's bad enough when Monk and Ayako come here and bicker constantly." He added the last part with a slight note of disapproval in his deep voice. Sometimes he secretly wished that the self-proclaimed Shrine Maiden and Buddhist monk would realize that they liked each other and finally start dating. He had similar desires for Oliver and a certain brunette to realize the same romantic feelings that they had toward each other. It would save him the irritation of listening to two teenagers bicker all day, or so he hoped. He was broken out of his reverie as all of the sudden, loud footsteps could be heard bounding over the wooden floor of SPR's reception room as Mai dashed hurriedly into the room, a bottle of Tylenol tightly clutched in her hand. She stopped beside Lin who turned to look at her, an eyebrow quirked in confusion at her seemingly excited mood.

"Sorry it took me so long, Lin. I guess that you said left desk drawer- I was looking in the right." She said, smiling apologetically as she held out the bottle of pain reliever to her colleague. He took it and glanced at Naru, who was smirking.

"Mai, I knew you were dumb, but I thought that you were coherent enough to know your right from your left. Maybe I should cut some of your work hours so that you can spend more time in school, because apparently, you could use the extra help," Naru said condescendingly, a slight smirk gracing his lips. Mai huffed and was on the verge of saying something that she would undoubtedly come to regret, but couldn't get the words out fast enough before Naru continued to speak, "Mai, tea." he ordered, his smirk growing slightly as she turned to glower scathingly in his direction. Lin's shiki circled around his head more quickly as they sensed the growing tension in the room, signaling their master that they were ready to intervene if need be. 'Méiyǒu yǐnqǐ rénmen de guānzhù.' Lin said to them in Chinese, using the telepathic link that he shared with his shiki to send them a calming message. The shiki responded by floating a little bit closer to their master's head, as if preparing to defend him if the need arose, though they stopped circling quite so fast, and for that, Lin was secretly glad due to the fact that a severe migraine and watching something spin rapidly often had repercussions. He was not going to give Naru the satisfaction of seeing him get sick during work if he could prevent it; he'd never live it down.

At the same time, Mai blushed scarlet as Naru smirked at her. "Stupid narcissist!" She shrieked, before darting out of the reception room and beginning to run in the general direction of the kitchen. Lin shook his head slightly and ran a hand through his thick black hair, smoothing down the lock covering his right eye. Lin met Naru's scrutinizing gaze and sighed.

"You still want to try and find the underlying cause of the change in severity of these headaches, don't you?" He questioned, although he already knew the answer.

"Yes," Naru replied simply, raising an eyebrow as he paused, waiting for the revelation to sink in, "I need to know what you think caused the original headaches." Lin nodded as the headache once again became overwhelming. He sat back down on his desk chair and stuck his fingers in his mouth, and whistled as quietly as he could. His shiki evaporated and disappeared once again. He placed the still unopened bottle of Tylenol on his desktop and turned to stare at his charge, his gray eyes hard.

"When I first started getting headaches, it was right around the time that my powers started growing stronger. It was unexpected, although I'd always known that I could sense things that other people could not, but never had I been able to see spirits so clearly." Lin said as he idly rubbed his temples.

"Is is possible that a powerful spirit is trying to contact you and is unable to project itself properly, although your eye is still trying to sense it?" Naru asked, his voice calculating.

"I honestly don't know, Oliver," Lin answered, wishing that Naru would just drop the subject entirely, Talking was making his migraine worse, "Maybe I should give Martin a call. He might know what the headaches mean, and be able to sate your curiosity on the matter as well." He added, saying the last part rather sarcastically.

Naru ignored the obvious sarcasm directed at him and nodded. "As long as mother doesn't catch wind of it, then I'm quite alright with Martin providing his aid." He agreed reasonably. That's when Mai came back into the room, a tray with three mugs of Earl Grey tea situated on it. She walked over to Lin and placed a cup of the steaming brown liquid on his desk. He glanced up at her and nodded his thanks, offering her a slight smile before grabbing the bottle of Tylenol and twisting off the cap. He blew into his mug to cool down the tea some, then took a sip, and dumped two tablets of Tylenol into his mouth. He didn't honestly think that they would work, but he needed to try something to stop this distraction. He swallowed the pills and sat his tea cup down, turning his attention towards Mai, who was standing in front of Naru, the now empty tea platter held in her hand. She was gazing at the roof, where Lin's shiki had been before she'd left.

"Lin, what happened to the shiki? I was going to ask if I could touch them, you know I've never touched a spirit unless it was trying to kill me and-" She stuttered, but was cut of by her narcissistic boss.

"Of course," Naru began, shaking his head, "ghosts try to kill her all the time, yet she still feels the need to pet them."

Lin was about to reply, though to his shock and mild annoyance, his cellphone rang from his pants pocket. He slipped it out, wincing at the droning ring-tone as it made his headache slightly worse, and glanced at his caller ID. He felt his heart rise up to his throat and his stomach hit the floor; it was his father, someone whom he didn't have the best relationship with and only spoke to on rare occasions.

"Dad?" He choked out, as he watched Mai and Naru stare at each other, unspoken concern in Mai's gaze and forced stoicism in Naru's.

"Koujo," the gruff yet familiar voice of Lin's father rang through the receiver, "It's your sister. She's gone missing."

Lin dropped the phone.

A/N

The Chinese sentence Lin sent to his shiki roughly translates to "There is no cause for concern." in Chinese.

Sorry if this chapter wasn't as good as it could have been; I had some words italicized and things of that nature, but my original document was lost when my laptop crashed. I would have lost the entire thing, had I not sent a copy to my beta through doc x. He knows who he is.

Additional info: In the manga it is stated that Lin is blind in his right eye, an has been since birth. He has electromagnetic vision in that eye. I simply took these facts and infused them with headcannons.