It took me a bit to get back on my feet, obviously.

Luckily I was in a state-of-the-art lab. No matter how shady the operation was, it was clear the government was dedicating a lot of resources to solving the problem with cubs going into heat. Protecting cubs was a fairly universal concern.

It gave me some time to chat with the scientists, go over my experiences with the cubs in more detail and hear about the progress they were making towards a cure.

I decided not to wonder what would happen to me if they figured out a medical solution to the issue. My life had ended when I got caught with cub porn, this whole thing was basically just a bonus. That said, I did prefer life (and my current job).

Once my body was up to the strains of hardcore heat sex again I got my next case.

---

The house didn't catch my eye until I was opening the door. Then, something inside my mind starting going off like a fire alarm. Something was very, very wrong. Not dangerous, not like when the bear had burst into the last house. No, something was twisting my guts with anxiety. I was not supposed to be in this house.

Then I looked at the wall and saw a family picture.

I was in it.

This was my sister's house. Where my neice lived.

Heart suddenly hammering, mouth suddenly dry, I dashed to the room at the end of the hall and threw open the door.

She was so happy to see me.

My little neice.

"You came back from your trip!" she exclaimed, sitting up in bed, eyes lighting up. She had been so upset to hear that I had suddenly gone away without even saying good-bye. She had written me letters saying how much she missed me and she hoped I would be back by her birthday.

I backed out of her room and shut the door behind me.

I walked slowly down the hall, legs shaking.

My niece was in heat. My niece was in heat and if I didn't have sex with her it would cause permanent damage to her body.

Let me tell you something about my relationship with my niece.

I knew I was a cubphile from my teens. I also knew that the world, by and large, takes a dim view of folks who are attracted to cubs. That whole thing I mentioned earlier about the welfare of cubs being an important topic to most furs.

Despite my attraction, I vowed early on that I'd never lay a paw on a real cub. I satisfied myself with fantasies and games and comics buried in the darker parts of the internet. I managed to keep my outside persona perfectly socially acceptable.

Then my little sister got married and they had their daughter, my little niece. And she was beautiful. I can understand why some furs get into incest. There's something especially beautiful about a small, innocent child that has a face that looks like you. I adored my niece from the moment she was born.

I also went home from the hospital and stared at myself in the mirror. I told myself I would kill myself before I laid a paw on my niece. I'd never do anything to break her trust or the trust of my family. She would be my proof to myself that I was not a monster, not a rapist, that my love of cubs meant protecting and nurturing them, not destroying their lives and their families for my sexual gratification.

And I had done it. I had watched her grow up. I had changed her diapers, bathed her, helped her into her swimsuit, taught her to swim. I had snuggled up with her and had her fall asleep on my shoulder, on my lap, on my stomach. I had been like a second father to her and she and her parents trusted me more than any other fur in the world.

I had babysat her almost weekly when her parents had gone out for date nights. I had helped her with her homework. I had hugged her and dried her tears. I had held her paw and watched over her while she was sick. I had cleaned up her puke and changed her pee-soaked sheets.

And I hadn't seen her naked in years, not since the last time she had gone running wild and giggling from her bath and led her parents on a chase, refusing to put on clothes. I had never sniffed her used underwear. Never stood at the door and listened to her use the bathroom. Never tried to get a peek. Never slipped my hand down to stroke her thighs when she laid against me, asleep.

I had fantasized about her, of course. At night, alone in my room, I had opened that door. But, in the daytime, in reality, I had never even gotten an erection around her.

I had proved to myself that I wasn't a monster.

And now she was in heat.

And now I was going to have sex with her. I HAD to have sex with her.

I felt sick. A mocking voice inside insinuated that this was just what I'd been looking for: an excuse. An excuse to live out my darkest fantasies and get away with it. Fuck my niece with no consequences and no one knowing I was involved or even that it had happened at all.

I had to call. I had to get out of there. If I did this thing the last shred of my identity would be gone. I was already half-transformed into a fucking machine, this would be the last little push to send me over the edge. I wouldn't be able to sleep if my mind was full of images of my cock penetrating my niece.

Halfway down the hall I paused.

The goon had told me if I made another mess for them he'd get rid of me. Would this count as a mess? He also said they didn't have enough furs like me to go around. Would they be able to arrange for a substitute before my niece was permanently damaged?

Then another thought struck me. Even if they did get a sub that would mean a stranger, some random fur, was going to fuck my niece. A lot. Her blood would run down his cock and her room would stink of his cum. She'd moan and maybe resist and he'd push her down and force himself on my niece and rape her and she'd cry and tell him not to cum in her but he would ignore her and-...

I bit my lip, hard, pressing the back of my paw to my mouth, fighting not to throw up. My vision was blurry as tears stung at my eyes.

What was I supposed to do? Fuck my niece and become the monster I was always afraid of becoming? Or call for extraction, risk either death or a life knowing that some random fur had fucked my little niece.

I looked back at my niece's door.

I remembered how her face had lit up when I walked in. Before that I had seen a flicker of uncertainty. She had been so tired and felt so miserable, and she had expected a stranger to walk in, and it had showed on her face for the single moment before she had recognized me.

My niece was sick.

Suddenly, my perspective did a complete 180. I thought of all the other cubs I had been with. Though of how they must have felt, suffering through what they thought was a strange fever that drained them of all their energy and joy. Then me, some strange fur, had burst in and fucked them. They wouldn't remember it, the doctors said, but wouldn't they? Wouldn't there be some instinctive remnants in the darkest corners of their minds? Would it come back to them when they got older and tried to have sex? Would they find some sticky patch I left in their room and smell the scent of my stale cum and shudder at a hidden memory they couldn't quite recall?

How could I make this all about me? I was here worrying about my mental state when a little cub was sick and would be overjoyed to be treated by a relative over some stranger. I wasn't here to have enjoyable sex. I was here to heal a cub I loved with all my heart. And every single cub I was with was someone's cub, someone's beloved child. The parents were probably distraught knowing what had to happen to cure their cub of the heat. They would have to look at their cubs every day and think 'some stranger had sex with her'. They would have to clean up after the mess.

How selfish could I be? If my little cousin needed me, I was going to be there for her. I needed to stop thinking of myself, and start thinking of my patients. That's what they were.

I walked back in to my niece's room. She lit up again.

"What's the matter?" she asked. "Where did you go?"

"I had to go to the bathroom," I lied, making a silly embarrassed face.

"Eww~" she giggled, wrinkling her nose.

"How are you feeling?" I asked.

"Weird," she said. "I've been sleeping a lot but I still feel tired. My body's all hot and sweaty and I feel gross. My privates are all squirmy."

She wasn't shy about talking about her privates with me. She never had been. She knew I was a fur she could always talk to without any fear of judgment or teasing. I always tried to be open and honest with her about bodily functions, at least in a way that was appropriate for her age.

"I'm sorry," I said. "But I'm here to make you feel better."

She perked up.

"You're the one the doctors sent? Mom and dad told me someone would be coming, but they didn't say it was you!"

"That's right, they wanted to keep it a surprise," I lied. She wouldn't remember anyway. "I know how much you missed me, so I asked specially for them to let me come help you. This is what I've been doing on my trip. I've been helping other cubs like you feel better."

She visibly relaxed, some leftover tension melting from her body. She was so happy and relieved. I had made the right choice.

"I'm glad it's you," she said. Then she held up her arms, demanding to be hugged.

I crossed the floor and caught her up in a tight hug, then pulled back so I could look at her face.

My niece takes after her father, rather than my sister. She is a little raccoon with some reddish-brown accents to her otherwise gray and black fur. Many an afternoon I would have her lay her head in my lap so I could trace the dark mask on her face, or have her curl up so we could count the rings on her tail together. That's what I would often call her, my little ring-tail.

Now her tail swished happily and I reached out to stroke it. She sank into my arms and let me pull her up onto the bed so she was laying against my chest as I sat on her mattress. I wanted to hold her for hours, just stroking her tail and tickling her ears and inhaling her scent.

But her scent was full of the heat pheremones, and my cock was starting to throb with need. I fought it down, for the moment. I was going to make sure she enjoyed at least part of this, even if she never remembered it.

"Okay, I'm going to start the treatment," I murmured gently into her ear. "I need you to take your pants off for me."

No hesitation. This was what an entire lifetime of trust had gotten me. She slid her blue PJ bottoms down around her ankles then gently kicked them off. I had seen her with just a top and underwear on before. Countless times. But it still sent a shiver through my fur seeing her light blue hip-huggers with a dark blotch of wetness at the crotch.

"I'm going to give you a massage to help your privates feel better," I said, embracing her from behind, pulling her close to me, and reaching a paw down to stroke gently at her lower belly. I slowly slid it down until I was caressing the wet spot on her underwear. "All I need you to do is relax. Even if it starts to feel funny, that's part of the massage. If you relax like a good girl, it may even feel good."

She was, apparently, a good girl. I felt all the tension fade from her muscles as she leaned into me, her hips rising ever so slightly to meet my touch. I could hear her sweet breath as she reacted to my finger beans touching her little bean through the thin, damp fabric of her underwear.

Looking down, I could see the muscles in her legs clench and unclench as she started to very slowly find a rhythm. She was being moved by the pulses of pleasure my fingering was sending through her body.

She was so wet it was soaking through her underwear completely now, leaving a slick of lube on my fingers. Her hips were thrust up into my touch more insistently now, her breathing long and hot. She was ready for more.

I slid my paw under the elastic hem of her underwear and fingered her clit skin-to-skin. The first touch made her back arch like I had shocked her with electricity, and then she melted against me, reaching a paw up to grip the fabric of my shirt as the feelings I was giving her took over.

I carefully slipped one finger into her tiny, wet hole, doing my best to avoid her hymen. Her hole stretched for me, letting me get my finger in enough to hunt for her g-spot. I found the little fleshy patch and focused on it with one finger bean with my thumb continued to tease her tiny clit.

Though I'm sure she had felt some accidental friction on her clit before in her life, I'm sure she had never experienced having her g-spot massaged. It didn't take her long. I felt her legs shaking harder and harder until she suddenly curled herself into a ball for a breath, then orgasmed explosively. She let out a long, loud moan and slumped back against me, her back relaxing as spasms of ecstacy shook her muscles. I held her tight, feeling every tremor, feeling her little chest breathing hard, her little heart pattering like a a drumroll.

I hugged her even tighter, burying my nose in her hair, inhaling her sweat and heat, opening my mouth to taste it. She was dripping natural lubricant onto the bed from her still-clenching pussy, creating a steadily-spreading dark stain on the sheets beneath her. She was ready. We were ready.

"I'm gonna do the treatment now, okay little ringtail?" I murmured in her ear. She nodded tiredly.

I helped her turn around to face me and she naturally wrapped her arms around me and pulled close, resting her cheek against my chest. I quickly got my pants out of the way and used my paws on her soft, plushy butt cheeks to navigate her to where she needed to be.

She gasped, sweet and slow, as I slid my rigid cock up inside her. Her pussy embraced my penis with the same gentle insistence she was embracing me with. I expected pain, crying, but she just hugged me tighter and breathed, ragged and deep.

I was inside my niece. The warmth of her vagina enveloping my shaft seemed hot enough to burn. Warm enough that I felt like I never wanted to pull out again. I wanted to spend my life in her arms, inside her, holding her. But it was too painful not to move. Every muscle in my body needed to fuck her.

Sinking my fingers into her plush ass cheeks I moved her. Only her lower half moved up and down, her upper half was kept steady as she clung to me and nuzzled harder against my chest, her sweet, hot breaths tickling my nipples. Her vagina squeezed at me, not wanting to let me go, drawing me deeper in. Her body wanted us connected forever as well.

We were both moaning, our voices mingling. I was holding back. As soon as I felt the urge to cum building inside of me I fought it. I didn't want her pushing me away, telling me 'no' like the other cubs did when their bodies rejected my infertile sperm. I wanted to continue enjoying the moment we were sharing, just as it was.

My own breathing became more ragged than hers as I clenched my gut, trying to hold back my orgasm while I continued sliding her up and down on my shaft, our bodies making a wet smacking as they came together, flecks of her lube splattering both of our legs.

But I couldn't hold out forever. Blood was rushing to my head, my heart pounding in my ears, I lost every bit of control and banged her up and down until with one final thrust I buried myself as deep as I could. I moaned, loud. The release after all the edging was almost painful.

My little niece did not push me away. Instead she continued to hold me tight as this time it was me shuddering and spasming in her arms as my twitching cock spat a seemingly endless load of cum up inside of her. I could feel her hips pressing down on me, accepting me, accepting my semen without complaint.

I was mystified. Was this a problem? Had the infertility treatments failed? Was I going to get her pregnant? The thought almost shriveled my erection.

But she opened her eyes and looked up at me with such love and trust and need that other thoughts flew out of my head. I lifted a paw to stroke her cheek and she leaned into it, needing my touch.

The heat made me want to kiss her, taste her tongue and drink in her breath. But another part of me still didn't want to think about her that way, so instead I pressed my lips to her forehead as I had to kiss her goodnight for so many years. I drew her to me, embracing her like I never wanted to let her go.

At some point in our embracing I was in her and hard again and she was moaning sweet little cries in my ear, tickling my soul with sounds I'd never heard her make before. I was moaning too, little ragged gasping sounds she'd never heard either.

Again she pressed herself down onto me when I came, drawing it all out of me, massaging my hips with her plushy ass. She kept her eyes open this time, while she took my cum, looking at me steadily, emerald green sparkling with silent gratitude. Her body wanted my cure.

I fucked her gently and came inside of her until she yawned sweetly and curled up against me, quickly falling asleep against my chest like she had a thousand times. I sat holding her, rocking her, listening to her breathe until the warmth of our passion faded from the bed and I finally had to tuck her in. 

I kissed her again gently on the forehead and walked out to call for my ride home.

---

When I got home I sat on my own bed for a long, long time, just staring at the floor. Then I started to cry. It wasn't the choking, dirty self-loathing sobs of the monster I thought I would become that night. Instead it was pure grief.

I wasn't going to see her again. Or my family. She wouldn't even remember seeing me that night. She'd never know where I had really gone or how much I really missed her. I doubted the intelligence goons would let me out of here alive, even once a medical cure was found for the early onset heat stuff.

I sobbed out loud, wiping away tears with the backs of my paws. I wanted to see her again, to be her uncle again. I wanted to know she was going to be alright. I really loved her. More than anything. Thinking about what we had done together that night didn't get me hard or haunt my dreams like feared. I was glad I had been able to help her, glad I had been the one.

In the end I cried myself to sleep, curled up in a lonely huddle on my bed.

---

Later, when I was back in the lab again, one of the scientists apologized to me.

"We didn't realize she was related to you," he said. "Different last name, different species. It didn't click. I know how damaging that kind of thing can be, psychologically. We'd never have sent you if we had known."

I shrugged it off. There was something I was more curious about. Worried about, even.

"She didn't push me away or reject me when I... uh," for some reason I was shy about describing my sexual encounter with my niece. Luckily, he understood and nodded.

"I'm sure you two had a close relationship. You see, we've studied just about all there is to know about our instincts and hormones and how they control us, so believe me when I tell you we aren't JUST instincts and hormones. The other cubs' bodies reject your seed because they know it can't get them pregnant. I'm sure your niece's body tried to as well, on an instinctive level. But the feelings she had for you were stronger."

He gave me a wry smile.

"Call it a cliche, but love is a powerful thing."