Monster Girl Defects Ch. 01

Chapter 1 -- A wolf girl and her prey

My name is Yuri, you're regular everyday guy and I've been working for the Betterment of Cross Species program for a short time now. My first job started only a few months back now. I've been assigned to a particular wolf girl with unknown origins. My job is simple, study and observe these monster anomalies to understand them better. As the world has become the home to many half monsters mixing races with one another. Most are born normal but there are those who have defects, so that's where we come in.

"Oh hello sir. Back again and so soon. You're spending all this time at our orphanage. You better adopt someone already."

The lady standing out side the orphanage was the headmistress. Canine beast folk are known for they're playful nature, and energetic tendencies. So an orphanage filled with regular children would make sense for temporary housing for young adult wolves

"Ah... No thank you. I'm here on business. So how is Kana today?"

"Oh. Well she seems to of gotten a little taller again."

"I see. That is strange well I best go see her now." Growing up for a human is considered a good thing. But when the person is beast folk with unexpected growth spurts which are rare, especially when we can't confirm her origin. We were called in to confirm if she has a defect or not.

As I walked down the corridor I was past by a group of children and there in the back happy as can be was Kana. She was dressed in an oversized off white camisole which stopped at her knees. Her hair was a hazelnut brown and sat on her shoulders. Her dog like tail and ears happily swaying back and forth as she cheerfully laughing along with the children. It wasn't hard to pick her out as she now stood above the tiny children only matching them in personality.

"Ah Kana. How have you been. You seem taller than last time?" It was a subtle difference but over a few months it was clear to see.

"Yay. It's mister!" She was as playful as always with unyielding energy. "Mhm! I'm bigger now. So you can play with me more!"

"Oh well isn't that great."

"Yay! Come! Come with me!"

"Oh okay. To your room is it?"

"Yup. I want to show you my drawings!"

It hadn't been long since I started visiting this girl. However I was unsure at first why I was asked to monitor her as she seemed like your average werewolf monster girl. But with every passing day I visited, she seemed a little taller. "So Kana. What have you been drawing? Oh is this you and a friend playing together?"

"Whaaaaat? Nooooo! This is me and you playing!" The drawing she was holding up was just an innocent drawing of two people playing... Or at least that's how it looked to me.

"Oh is that so. Well I think you and your friends would have a great time playing like this."

"You're silly mister. I only want to do these with you!"

Strangely, it seemed like this girl who has such a bubbly personality was trying to convey something deep within herself through drawing... Well trying might be a push with these scribbles. Ah what am I thinking that's a shot in the dark, what am I now l, a psychiatrist.

"Erm Kana. I've been struggling to understand you condition for a while now. So I've been given special permission for you to come live with me. So I can better understand and monitor your growth." I wasn't sure if she was even listening to me while she scribbled.

"OH!" her ears pricked up and her tail started wagging as her canine side took over. "Really? Can I? Yay I'm so happy."

"I'm relived, I'm sure this will help me understand you better." As I took a breath and went too look back at her she was already packing her things. "Oh. right now? What about your friends... Also, did you get taller again..?" Not just taller but a little curvy..? No that has to be my imagination..."

After a swift pack and a few chuckles from the orphanage's staff we set off back to my place. The first week sure went by fast in our new lives together. Every morning I would wake up, go into the hall, and be tackle by the ever playful Kana. Then we'd spend the day playing as I studied her constant growth. One observation I made was that she is a very touchy girl, always quick to make body contact and wrap her arms around me.

The start of the second week was much different however. I woke up at the same time as usual and went through to the kitchen like normal.

"Yay! Master is up! Play with me! play with me!"

I yawned throwing my arms into the air as I stretched out wide. "Not right now Kana... Wait, master?" Before I had a chance to react, I was barreled into and thrown to the ground. "Ack! What just happened?"

"Master.... It hurts... Play with me lots..."

"What hurts? Are you okay... Wait! You're so... Big!" I wasn't just talking about her height. What sat comfortably on my crotch was Kana's large, perfectly curved bubble butt. Her body was exuberating sex appeal as my eyes traced her outline from her ass all the way to her huge breasts and lustful eyes. Her camisole was now tight to her body, the chest straps struggling to hold back her nipples.

Kana began lifting her skirt just enough for me to catch a glimpse of her tight blue and white striped panties. Before she went any further I grabbed her and forced her skirt back down swiftly pushing her off me as I stood up.

"Aaaw. Master! Stay and play with me."

By this point, I was already in a different room breathing heavily looking down at my bulging pants. "Gah. I need to calm down. That could have been bad. Was it my imagination or was her body giving of a hypnotic appealing. What am I saying! Where's my notebook. I better write this down. Yes. That will calm me down." I reached into the draw where my note book was and to my surprise Kana's drawings were in there too. "Oh! I haven't seen these in a while. This will help me relax." As I started flicking through the pages I was soon sailing half mast again. "After what just happened and now looking at these drawings. I can't help but see different sex positions in these drawings... Gah I need to keep my distance today..."

The rest of that day I did just that keeping my distance taking on the roll of an observer. However it didn't go very well as Kana used every opportunity she could to attach herself to me.

"Master! Why aren't you playing with me?"

"Oh er well. I don't think you should be touching other people like that."

"Ehhh? But I only touch you like this and you haven't complain before." Before now I never thought anything of it as she was only as high as my stomach and it felt wholesome. Now she towered over me and one wrong move I would be suffocated in between her huge breasts.

My observation continued like that until eventually the day came to an end after an awkward dinner. With the exhaustion of defending myself all day I hastily headed to my room for the night.

"Urgh. What a day. I can't believe she's so tall now. I really need to figure out why that's happening. Oh well hopefully tomorrow she's calmed down a little and we can talk this out. I should apologize for looking at her body like that too. It was wrong of me." I soon fell asleep hopeful our relationship would go back to normal.

Living on my own for so many years left my imagination running wild that night. Kana's warmth was melting my body as she lay on top of me. Her saliva pooled around the base of my cock as she looked hungrily at her meal. She suddenly dropped, making my member vanish into her mouth. I couldn't help but let out a moan. "Oh yes Kana. More Kana. Your mouth is so Good! W-Wait... Is this a dream. No no. I need to wake up. This isn't right!"

Waking up, I stared at the ceiling but I still felt warm as if the saliva was still soaking my cock. "That's strange. I haven't had a wet dream in years..." It wasn't until that moment that the sound of visceral slurping filled my ears. The erotic sound was originating from my lower half.

Slurp, suck, suck, slurp.

I looked down to see the covers removed and the doughy eyes of Kana starting deeply into mine "Kana! What are you doing."

"Ah. Slurp. Mashter you're fwinally awake slurp." Kana raised her head as my dick began to slide out of her mouth with a satisfying squelch, followed by a string of saliva. "You haven't played with me all day..! I've been so frustrated I couldn't help myself." Without any other words she grabbed my cock toying with it between her fingers before gently to continue sucking it.

Why didn't I move to stop her? I knew we had crossed a line but it was like her body, which was now huge, busty, and thick, was hypnotically telling me to relax and enjoy. I didn't stop her instead we locked fingers as I dropped my guard leaning in to the pleasure.

"Master I need to apologize for something."

"Uh ah... Oh? What is it?"

"I didn't tell you about my parents. I thought you would hate me." Kana let go of my cock kissing the tip as it throbbed and sat up straight towering over me. The trail of saliva ran from the tip of my member up her body and landed on her breasts. "My farther was a werewolf. But my mother... She was a succubus."

"A succubus!?!" Succubus are known for having insatiable lust and demonic powers of seduction. Some are even know to grown in size becoming taller and more curvy to seduce their pray. As I thought about that I could only watch as the exact description of a succubus wrapped her hands around me. Those cute ears and fluffy wagging tail I had come to love dearly were now attached to a starving lustful succubus.

"I thought if you knew. You'd think I'm some sort of demon." At this point I was powerless as her huge breasts pressed against my body. Her heavy and sweet breath brushing my face. Her human like nails digging into my back. This was it, I had given in to the pleasure.

"I-I would never hate you for something like that."

Kana raised her ass as she grabbed my cock firmly with one hand. She whispered directly into my ear. "Every time I see you my chest hurts, I don't understand why I keep getting bigger. But don't leave me, I need you!" As she said that the tip of my penis swelled kissing her pussy. Kana let out a soft moan wriggle over me and within a second she slammed down on my dick ferociously letting out a yelp of lust.

"If master will notice me when I'm big. Then I don't mind becoming big."

I grabbed Kana's thighs with both hands which disappeared deep into her soft skin. The sounds of her ass slapping against my pelvis, the squelching noise coming from her pussy, the intoxicating smell filling the room, and her innate succubus charms. It was clear to see how skilled she was at seducing her prey and clear to see how much see wanted me.

Kana's thrusts began to intensify and her nails started to draw blood on my back. Her mouth was wide open moaning for joy hovering over my face and I could smell the sour mix of precum and saliva on her tongue. Watching me melt away she sunk her teeth into my neck which only made me more excited.

A half werewolf half succubus mix breed, who would of guessed? With the energetic playfulness of a young pup but the lustful greed of a mature succubus. This combination was dangerous indeed, well for my cock anyway.

Managing to dislodge her teeth and claws I flipped her over laying her on her back. I wrapped both arms around her legs pinning her to the sheets as I continued to thrust. Allowing the pain in my neck and back to be overwhelmed with pleasure once again.

Her abnormal height increase is caused by pent up lust for her prey. Typically a succubus will devour her prey however Kana's wolf blood keeps her on the playful side meaning my life doesn't feel at risk.

Her yelps and moans where too cute causing me to thrust harder and fast to hear what other sounds she might make. I was beginning to thrust hard and deep and the more I wanted the faster I went. Thrusting sporadically, I soon lost grip of her legs. She wrapped them around my body and grabbed my head pulling me into her breast. The soft overwhelming heat and intoxicating smell of her scent and sweat went straight to my head as I struggled for air. I was powerless to her wolf like strength and succubus seduction.

Kana does not understand nor control her size change. Unchecked, extreme lust from her succubus side can cause her innate canine wild side to kick in. This means that the wolf side will go into an intense heat and a strong urge to mate.

Managing to pull my head up high enough to gasp for air I was soon unable to breath once again. Kana buried her hands in my hair pulling my head towards her wet drooling mouth, kissing me deeply. Her long hot slippery tongue was now exploring my mouth as saliva ran down my cheeks. She tasted sweet as if heaven was a flavor of ice cream. That was the final push over the edge as I tried to pull out ready to cum. Sensing it Kana tightened her legs refusing to let me go and started massaging my cock with the walls of her pussy. A moan escaped my mouth, I couldn't hold on with this much intense pleasure. I started cumming deep inside her pussy, pumping hot thick load straight into her womb coating the inside of her uterus. I couldn't stop cumming for some time and a lot more than I thought possible.

After a few minutes of nonstop cumming I finally collapsed on top of her. "Shit sorry. Why didn't you let me go?" The possibility of getting her pregnant and loosing my job racing through my head.

"I didn't want a single drop to escape my womb."

Kana's soft pillow breasts were hard to escape from and her gentle giggles of content soon made me close my eyes falling asleep between paradise.

Morning came fast as I woke in a panicked state. "Wah! That had to be a dream right. Please tell me I didn't fuck my subject..." I felt the warmth of my covers and felt a second of ease until a foot smacked me in the face seemingly out of nowhere. "Ow that hurt... Wait Kana!"

A tired little Kana was laying across my body with her feet in my face. "Yawn. Oh good morning master. Thanks you for last night. We played so much and I got lots of masters cum!" She spun round and gave me a kiss on the cheek, kneeling over me.

I sighed stretching a little running my fingers across the cuts on my chest which Kana's nails made. "So that wasn't a dream was it...?"

"Noooo! Why would it be a dream? We played so much and so hard. I'm so happy!"

"Damn... How am I going to explain this one to the boss.... Oh what? You're small again." I couldn't believe my eyes so I reached out and cupped her tiny breasts comparing them to my hands memory of her huge breasts.

"Waaaah. Now master will get rid of me. Waaaah. Hmmmmmm." Pouting, Kana began holding her breath squeezing her lips together and clenching her fists.

"Hey. Stop that. What are you doing?"

"I'm trying to get bigger again so master will love me..." A tear appeared in the corner of her eye as her face started to turn purple.

"Stop! You don't need to worry. I won't get rid of you." After I fucked the girl, the least I could do is continue to let her live here. "Ah the boss is going to destroy my ass for this..."

"Yay! Master will play with me everyday!"

"Seems like you're back to your energetic self. But I need you to answer truthfully. You are a werewolf right. An adult with a youthful personality?" I'm was pretty sure my observations were correct but I was also praying on my lucky stars.

"Haha. Master is so funny, I'm in my early twenties. A fully grown up wolf pup. Yep that's me."

"Oh thank goodness. I guess I can add acute immature personally disorder to my report too..." Sighing in relief I rolled over and began preparing myself for the terrifying task ahead of me. My report for the agency, how was I going to get out of this one...

After a few awkward days my first job had reached it's end and I went to the headquarters to file my report. Which went absolutely fine... I wish... I was promptly ordered into the bosses office and I handed her my report. She was sitting on her desk, legs crossed, reading my report as I fidgeted on the spot awkwardly waiting to hear her chew me out.

"Congratulations newbie. On discovering a new defect. A rare one too. Only found in succubus werewolves. Our science department will be excited with this news."

To my surprise the boss was actually complimentary to my findings. I was beginning to feel proud and confident in my report. "Oh well thank you. You know for a first job-"

"Silence! We gave you this job because it was a nice simple case. But no! You had to go and fuck the girl."

At this point I was on my knees head on the ground. "I can explain...."

She sighed in disappointment swapping her crossed legs over. "Well at least I don't need to send your ass to jail. I have had a second researcher confirm you suspicious on her immature personally disorder..."

"I'm sorry. Thank you."

The boss waved my report around as she spoke and I could sense the disappointment in her voice. "Ugh... Well the girl seems to like you and testifies to your story. So I see no harm this time... But we do have a reputation to uphold."

She placed her foot under my chin raising it as she rolled her eyes at me. "Get up off the floor. To save face you better look after that girl. Maybe you can help treat some of those immature tendencies."

"I'm sorry. Thank you. I will."

"Here catch." The boss threw a small bottle at me which I fumbled before catching.

"What's this?"

"Well canine girls are known to have a large litter of children. Unless you want to juggle fatherhood. I suggest you ask her to drink that. Or maybe just pull out next time."

I couldn't help but nervously chuckle, If only it was that easy.

"Right well. Here's your next case. This dragon girl hates humans. So I don't see any scenario which leads to you fucking her."

I grinned painfully at her insult as I got up from the floor. I really hope that's not going to become my thing... "Okay. Great. I'll do my best!"

So hence forth, my new life with Kana began. But something tells me this won't be the last girl to interfere with my quiet life.

Case file complete

Kana -- Half werewolf half succubus. Happily lives with immature personally disorder. Her mind and characteristics are of a wolf pup with bottomless energy and childish tendencies. However her body increase in size as her succubus lust takes over. Succubus are creatures of habit and will devour their prey with womanly charm. However Kana's wolf blood keeps her playful even during sex.

It seems that Kana doesn't have control of her size change almost instinctively increasing her size and curves to seduce her prey. It would seem that I was her prey from the start and her increasing lust to fuck me made her grow very tall and very thick. After sex her body returned to it's original small size, content in fulfilling her sexual desires. Was cumming in her womb the cause?

As a side note her harmless care free nature is side lined it cases of extreme sexual desire. This causes her innate canine characteristics to be amplified due to her succubus traits. Therefore sex is rough with playful biting and scratching.

Defect -- Increasing size, immature personally disorder.

Reason -- succubus canine hybrid

Notes from the boss;

Too much information!!! But thank you, canine girls have large litters of children. It's clear now that mixed with a succubus they are quite the scary species. Be careful when having sex. Also please be more careful on your next assignment and remember you are an observer. So observe!!!