Summary: Luna and Magnus didn't always have a father-daughter relationship. In fact at first, Luna hated him. Set 4 years before City of Bones, Luna Lyn is a 14 year old warlock with zero control of her powers. She wants to learn from the best, but what if the best is an 800 year old party animal who seems to bring in a different person every other week? Introduces my TMI OC Luna Lyn.

Disclaimer: I don't own TMI. If I did, Magnus and Alec would be married by now and would've never broken up… I own the plot, Luna Lyn, and any OCs that pop in randomly.

WARNING: MENTIONS OF ABUSE. And some Malec. And probably failure writing...and failure inaccuracies (PLEASE LET ME KNOW SO I CAN FIX THEM!)

A/N: Magnus and Alec will sometimes interrupt. Anything that is in italics will be outside of the story and shift back to 3rd person POV. Anything Luna thinks in the story will be in italics and have ' ' around the thought.

2nd A/N: Just an FYI, This story takes place after CoHF. I was originally gonna go with my own head-canon, but after reading CoHF, I just thought of this as another installment of TBC that wasn't written down yet.


Three: Be My Mentor?

Ok officially, Faeries are freaking bitches…' I thought as the High Warlock approached.

"Yes yes they are…" Alec muttered. The two warlocks laughed.

"Well well well…what do we have here? I don't remember inviting such a young warlock like you here." Magnus stated almost in a cocky way. I blushed, instantly feeling nervous as he looked down at me. I kept his gaze in an attempt to be brave. He smirked.

"Ahh I'll let you be. Why a girl so young is even here I have no-" He started.

"I came to talk to you Magnus." I replied. His eyebrows raised in surprise.

"Oh? And what would a little girl like you want to talk to me about?" He demanded calmly, but in an arrogant tone. I stood up from my seat and realized that he was a full foot taller than me.

I hate being short…

"I want you to be my mentor." I stated. He blinked. My guess is he wasn't expecting me to be so blunt.

"I wasn't, just so we're clear. And I'm sorry for sounding like an ass…" Magnus stated.

"I figured. And will you stop with that dad! I told you that you don't have to apologize. You got my forgiveness for taking me in and teaching me how to control my powers." Luna replied.

"Come with me." Magnus ordered. Oh jeez…either things are gonna go badly or he's a somewhat nice person and doesn't want to berate me in front of everyone. I followed him inside to a bedroom. I gulped. He must've sensed my fears because he smiled and shook his head. I closed the door, oddly trusting this seriously hot warlock. He beckoned me to join him on the bed but I stayed frozen in place. He sighed.

"You're a kid. I may be a warlock, but I do have morals. I'm not going to do anything." He stated.

"And having said morals mean I also remain faithful to my lover." Magnus explained. Alec smiled, burying his face in the warlock's chest and wrapping his arms tighter around him, remembering the events with Camille that he read about from Magnus's journal.

"In either case…" Luna stated before continuing.

I nodded as I very slowly walked over to the bed and sat down, fear bubbling up in my gut.

"H-how can you tell my age?" I stammered in fear. It probably came out like a squeak. Good going Luna…he probably thinks you like him. And while I think the guy is freaking gorgeous and rocks the look he's got going, I want a mentor, not a boyfriend. Magnus smirked.

"There are a bunch of ways to tell. One being by the fact that you don't know how to apply foundation. The foundation you picked is too dark and it's also caked on. You look like you just hit puberty too." He explained. I blushed and crossed my arms over my chest. He smiled and reached out to touch my face. I pulled away.

"Please don't touch me." I ordered. He let his hand drop, which surprised me.

"Alright. I'm sorry." He replied putting his hands behind his head and leaned back against the headboard. I raised my eyebrow in confusion.

"Why are you sorry?" I asked. He smiled and looked me.

"You're also too young to be wearing foundation. Unless your warlock mark is your skin covered with scales, which it isn't, I can tell that from your arms, then you shouldn't need any foundation. And judging by the fact that the foundation is uneven and caked on, I'd say you have some pretty bad scars on your face. But in either case, why are you here?" He explained. I blushed and looked down. He saw all that just by noticing the makeup? I think he could probably tell what made the scars too if he saw them…

"Yeah probably. Along with how much force was used and how it was fixed so you didn't die." Magnus stated. Luna and Alec sighed.

"I came here in hopes of asking you to be my mentor so I can be somewhat normal. I don't want to be trained by anyone else. In exchange for teaching me I can be kind of like a maid. I can cook and clean and do whatever's needed. It'd be better than wasting your magic wouldn't it?" I explained pulling my knees up to my chest. I noticed that I was still wearing my sneakers. Subconsciously, I slipped them off and hugged my knees to my chest, feelings of fear in my gut.

It was quiet for a long time, a thoughtful look in Magnus's gold eyes. He didn't look like a powerful warlock. If anything, he looked like a care-free teenager, no older than 19. If he were mundane, he'd be the one who'd have tons of fangirls and fanboys falling at his feet and make girls envious of him because he'd have the hottest guy hanging on his arm. I feel bad for assuming he's gay, but everyone knows that the hottest and most gorgeous ones end up swinging for the same team. And plus all those years in the closet meant dressing amazing.

"That's not always the case Luna…" Magnus stated looking at his boyfriend. Alec lightly smacked him on the chest.

"I dress for comfort, not style." He muttered. Luna sighed.

"You forget, I was an ignorant 14 year old that believed the stupid stereotypes and also tended to avoid people a majority of the time." She retorted.

"I don't take apprentices, especially when I don't know their name. But I will at least take you up on that offer to work for me. Do you at least know how to glamour yourself?" He asked. I blushed heavily at this, feeling more retarded than ever as I shook my head. He sighed.

"Very well. I'll teach you that at least. But will you tell me your name?" He asked.

"Luna. Luna Lyn." I replied. He smiled.

"You have a pretty name. And I can help you out, or at least give you better clothes so you don't look like a little girl playing dress-up." He replied. I looked at him is surprise.

"Really? You'll at least teach me to glamour myself?" I asked. He chuckled.

"Oh come now Luna. Do you want my help or not?" He replied. I nodded vigorously.

"Thank you so much!" I thanked happily. I smiled, something I don't even remember knowing how to do. A smirk was the closest I ever got to a smile. I stood up, feeling like I was about to explode with happiness when suddenly a part of the ceiling came down, scaring me. Magnus laughed and with a flick of his wrist, the piece that fell was back in place. I blushed.

"You seemed to do that a lot around him back then. Are you sure you two weren't…" Alec started, his jealousy creeping up again. Luna punched him in the arm.

"Gross dude. I wasn't at the age of consent till two years ago and plus; I CONSIDER HIM TO BE MY FATHER!" She yelled. Magnus gagged, his face looking a little green.

"My love, I assure you that I didn't, nor would I ever sleep with Luna. The idea is repulsing." He explained. Alec blushed, feeling guilty for being so jealous. Magnus pulled his blue-eyed angel close and kissed him softly, yet oh so sweetly.

"Besides, I have the most beautiful man in the universe in my arms, and I don't intend on ever letting him go again..." He murmured in his lover's ear. Alec's face heated up and his eyes close in pleasure as Magnus's hands slid up the shadowhunter's lean yet muscular torso, his gold eyes darkening from lust. He was about to pull his lover in his lap and have his wicked way with him when he heard Luna coughing.

"Hello! Still here you know…" She yelled, her face reddening. Magnus grumbled incoherently as Alec's cheeks went a deep scarlet.

He snapped his fingers and suddenly I was wearing a blue denim skirt with orange leggings underneath and a bright orange long sleeved shirt that flared out at the elbows. My dirt covered sneakers were replaced by blue sneakers with orange laces. I looked at myself in the mirror.

"These are mine?" I asked, shock on my face. He rolled his eyes.

"No I'm letting you borrow them." He replied sarcastically. I wanted to punch him. This guy is gonna be a royal ass, but I have a feeling things might be looking up.

"Now let me fix your makeup. If that's alright with you." He offered. I looked away, but nodded as I sat back down. Which is weird. Why was I was scared? Maybe because I wouldn't be a worthy apprentice if he saw my face? My guess is I didn't want to shame the gorgeous High Warlock with an ugly apprentice.

"Luna I was never ashamed of you…and I swear if those bastards turn up alive I'll be happy to watch them burn…" Magnus whispered reaching over and pulling the warlock girl in a tight hug. Luna hugged back. Alec kept an arm around Magnus, but reached up to rub Luna's back.

I didn't like this. He made me feel insecure, but I decided to not dwell on it too much and closed my eyes as Magnus scrubbed away the makeup. I don't remember the last time either I or someone else did this. It was really relaxing. He stopped after a while and I felt something a bit cold but light and soft drag across my face.

"What are you putting on my face?" I asked, feeling dumb at the moment. I'm 14. I should know what the hell to do with makeup, or at least know what the hell it is. I heard him chuckle.

"Powder foundation. The stuff you used was liquid, which made it look so heavy and caked on. Personally I hate that kind." He explained. He tilted my chin up and I felt the foundation being rubbed into my skin.

"Oh…" I replied.

"So how old are you exactly?" He asked.

"14. I was born September 15th, 1989." I replied.

"That's close to my birthday…" Alec realized. Magnus smiled and kissed his cheek.

"So noted. From now on I'll throw a joint party for the both of you." Magnus stated.

"Ah. I guessed 12 or 13 based on your frame. But what happened that made you get these scars?" He wondered. I bit my lip as I felt a powder swipe across my eyelids, which I guessed was eye-shadow. I must've tensed because he sighed.

"Nevermind, it's not my business. Open your eyes and look up at the light, but keep your face directed at me." He ordered. I did as he asked and felt something poke at my bottom eyelid. I flinched slightly.

"It's just eyeliner." He reassured. I relaxed as he lightly drew a line across the top of the lower lid. I blinked when he was finished.

"So let me get this straight, you didn't want him touching you before, and then you let him do your makeup?" Alec asked, trying to make sense of Luna's logic. Magnus sighed.

"Darling, remember, she was 14 and she sucked at putting on makeup. I had to do it or she would've screwed it up. And plus I like doing makeup. You should let me put some on you. Hey, don't look at me like that! I can be tame! Luna can attest to that! I did her makeup all the time when she first started living with me." He explained, defending himself when his blue-eyed Shadowhunter gave him a dirty look. Luna sighed.

"Alec don't give him the evil eye. He was actually very tame, and he can make it look very natural. Sometimes I let him do my makeup when I don't know what to do with my face, but in either case…" She explained before going back to the story.

"Magnus?" I asked as he did the same thing to my other eye.

"Hmm?" He replied.

"Why are you helping me? I know my face is fucked up, and honestly I've accepted that I won't be pretty for anyone to look at. It's why I've wanted to focus on being the best with my powers and study everything I can…" I asked, my insecurities taking over and speaking for me. I don't even know where that came from. Magnus smiled.

"Power is nothing when you don't appreciate yourself Luna." He replied as he pushed my horribly cut bangs behind my ear. I looked at him confused.

"How would you know exactly?" I asked. He chuckled.

"I've been alive since the 16th century honey. I think I'd understand that pretty well." He replied. My eyes bugged slightly.

"Keep your eyes wide like that while I put on the mascara." He ordered and I felt something wet hit my eyelashes.

"You're 600 years old?" I asked in awe, adding as an afterthought 'And you look that gorgeous?'

"Mine…" Alec muttered while wrapping his arms tighter around his love. Magnus smiled and kissed him.

"This possessiveness is very cute darling, but could you please ease up on the squeezing? I'm afraid you'll break something…" He stated while nuzzling his boyfriend's cheek. Alec blushed and let go, but Magnus kept his arms around his waist.

"I said ease up, I didn't say let go completely angel." He added. The Shadowhunter's cheeks reddened more before his mind processed something.

"I thought you were 400?" He asked. Luna sighed.

"This bastard lies about his age all the time. I've heard him say he was 1000 before. But Alec he's still been alive for a long ass time. I did the math and he really is 600 give or take. Don't get pissed at him either. He sees people guessing his age as a game." Luna explained. Alec frowned, but nodded.

I heard him chuckle again as I blinked.

"Yes I am. Now this may hurt a bit, but I'm going to pinch your cheeks a little to add a little color to your face ok?" He warned. I nodded and he gently pinched the area around my cheekbones, fixing the foundation he may have messed up. He then handed me a small hand mirror and I gasped at my reflection. I looked normal, pretty even! My eyes were lightly lined with eyeliner and looked bigger with the mascara and a pale colored eye-shadow was swept across my eyelids. But what caught my attention was the fact that my scars were gone for the moment. I couldn't believe that I looked pretty.

"But you are pretty Luna." Magnus stated while kissing his daughter on the top of her head. Luna rolled her eyes.

"Oh my god…" I whispered before I looked at the gorgeous warlock over the mirror and threw my arms around his neck, the mirror being tossed aside in the process.

"Thank you so much!" I cried. Nobody had ever done something like this for me, and I wanted to cry, but didn't want to ruin his work. I felt his arms circle around me and hugging me back.

"You're welcome, Luna." He replied, and I could tell he was smiling. I heard it in his voice. I closed my eyes in attempt to hold back tears. I must've been shaking, because I felt his hand run along my upper back in a circular motion. I felt safe, but I was also afraid. I didn't want to disappoint him. I had to be the best, no matter what I had to push myself to do. I didn't want to pull away, but I guessed he was feeling awkward, so I did.

"I'm sorry…nobody has ever shown me that I could even look pretty or anything like that before. I just…damnit…" I explained as I blinked backed tears again. I was NOT crying in front of my teacher, especially if it meant screwing up the pretty face I wore. He smiled.

"It's alright. The makeup is waterproof. You can cry if you need to." He replied. I shook my head.

"I'm ok. But really though, thank you." I reassured as I blinked rapidly to hide my tears. I'd cry later, when I was alone. Magnus smiled.

"You're welcome. Now you said you'd come in and clean if I taught you how to glamour yourself at least, yes?" He asked.


I hope everyone likes chapter 3. =) And I FINALLY read all the books (and CoLS was even more painful than imagined, but CoHF fixed that), but I'm still paranoid. Please tell me if I've screwed a character up...

~Lily Truesdale~