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Chapter 1 - A Secret Transgression

During my senior year of high school, my parents saw that I was falling behind and arranged for me to transfer to a school in the city. Since there were no beds left in the dorms and they didn't trust me to rent a place on my own, I had to temporarily move in with my cousin's wife.

My sister-in-law was gorgeous. She had fair skin, a full chest, and long legs, and she dressed impeccably. Even though I was technically her husband's younger cousin, she always treated me like a stranger. The very first day I arrived, she warned me to follow the rules.

Because my cousin's work required him to travel often, it was usually just the two of us at home. My sister-in-law acted as if I were invisible, constantly wandering around in a thin strap nightgown. Her pair of smooth, fair legs were an endless temptation. It was as if she had no sense of shame, unlike the widow Wang back in the village, whose thighs you could only ever hope to glimpse when she was bathing.

At first, she would at least wear a bra. But soon she grew bolder, going completely braless. The two points of her chest pressed against the fabric, an incredibly tempting sight. Every time I saw it, my heart would pound and my body would react uncontrollably. My mind would fill with images of her perfect curves.

I had this faint suspicion that she was deliberately trying to seduce me. I was impeccable in every other way, so even if she wanted to kick me out, she couldn't find a good reason. This had to be her way of playing dirty.

Despite my best efforts to behave, she finally caught me with my guard down.

That day, after she finished her shower, I slipped into the bathroom as usual. The lingering steam was the perfect cover for me to blow off some stress. Living under her constant scrutiny was suffocating. Honestly, I loved this rich, fragrant scent that wasn't overwhelming. Every time she walked past me, a wave of perfume followed.

Then I saw it. She had forgotten her underwear, leaving it on the corner of the sink counter.

Seriously, this underwear was shamelessly designed. It was like the manufacturers were competing to see who could use the least amount of fabric. Back in my village, you told men's and women's underwear apart by color. But in the city, it was different. If it was translucent and looked alluring, you could bet it belonged to a woman.

My arrival had prompted her to start drying her personal items in her bedroom, a clear sign she was trying to keep me away from them. This move wounded my pride. What kind of sordid thoughts could a kid from the mountains possibly have? Her constant suspicion felt like she was looking down on me from the very bottom of her heart.

It wasn't surprising, I guess. In the years she'd been married to my cousin, she had never once returned to our old home. Our village only had water and electricity; to make a phone call you had to go to the general store, and the toilets were just brick outhouses swarming with mosquitoes. A pampered princess like her, always glued to her iPad watching dramas and scrolling through social media, probably couldn't stand it for a single minute.

Suddenly, a wicked idea popped into my head, but I immediately hesitated.

"Mountain folk... country bumpkin... don't you dare enter my room. Don't think a distant family connection means you can treat this place like your own home. Know your place. If my husband hadn't begged me over and over, I would have never agreed to this! If you don't behave, you can get out immediately!"

Her cold, cruel words echoed in my mind like a tightening band. I'd even been having nightmares recently, dreaming that I was sent home in disgrace, with my parents sighing at me, completely disheartened.

And it was all her fault. She was the reason I couldn't focus on my studies. But in her presence, I didn't dare breathe a single word of protest.

No. I had to get back at her. My hand trembled as I reached out and picked up her bright purple panties. The silky, soft material felt incredible. I couldn't help but bring them closer, noticing a small, white stain on the inside. My biology grades had always been decent, so I knew exactly what that was.

Then, as if possessed, I took a sniff. An indescribable, foreign scent filled my senses. My face flushed and my whole body grew hot. Perhaps it was a strange form of self-justification, but I convinced myself that I wasn't doing this to be perverted; I was doing it to get revenge, to relieve my stress so I could study better.

Next, I wrapped the panties around my already strained erection and placed her bra over my face. That natural, milky scent was intoxicating. I was completely mesmerized. Closing my eyes, I couldn't stop myself from playing a game of five-on-one.

It wasn't my first time, but it was without a doubt the most unforgettable session of my life. I felt like I was being intimate with my sister-in-law herself, sharing a woman with my cousin. After all, these clothes carried her truest scent.

I was at the height of my pleasure when I heard a knock on the door. My sister-in-law had realized she'd forgotten her underwear. In a panic, I shot my load all over the panties. I was screwed. If she found them like this, she would kill me.

"Sister-in-law, I'm showering! Can you wait a minute?" I stammered, my mind racing like an ant on a hot pan. The panties were already soaked. Putting them back would be an instant giveaway. There was a small window in the bathroom, but I was afraid that if I threw them out, another resident might find them and cause a scene. I'd be just as guilty.

Dammit, I was doomed either way! But she couldn't find me now. In a flash of inspiration, I lifted the lid of the toilet tank and threw the bra and panties inside. From the outside, nothing looked out of place.

Only then did I open the door. I kept my back to her, terrified she would see my wilting member.

"Huh, I swear I left them right here. My bright purple underwear set. How are they gone? Ethan, did you see them?" she asked, looking at me with a puzzled expression.

"Ah? I didn't see any underwear when I came in, Sister-in-law. Are you sure you don't remember wrong?" It was the first time I had ever lied, and I finally understood what it meant to lie through your teeth.

"Really? I'll look around then," she said. "You know, Ethan, you're pretty well-built. A lot stronger than your cousin." Her gaze lingered on me for a moment. I blushed and muttered, "Sister-in-law, could you please leave? I'm shy."

"What, I can't even look at you? This is my house. I'll leave when I want to!" she retorted, shooting me a glance. I don't know if it was my imagination, but I sensed a hint of flirtatiousness in her eyes. My sister-in-law was truly shameless.

I felt helpless. Thankfully, her phone rang and she ran off to answer it. I quickly finished my shower, got dressed, and walked out of the bathroom. She was already dressed to the nines, ready to go out again. She often stayed out all night, so I was used to it.

But today, her outfit was especially fiery. She wore a black T-shirt that exposed her navel, which was adorned with a glittering stud, making it look even sexier. Her denim hot pants traced the alluring curve of her perky bottom, and paired with her light red heels, it created the visual illusion that everything below her navel was just legs.

"I'm heading out. Go to bed early," she said with a wave, and then she was gone.

I let out a sigh of relief. I was about to go wash my own underwear, but then I worried she might be testing me. I hesitated for a moment, then acted normally. I mopped the floor, sat on the sofa to watch TV, and tried to figure out what to do with her underwear.

Honestly, I wanted to keep them, but I had no private space in her house. I quickly abandoned that idea. No, knowing her personality, she wouldn't let this go. That hot potato had to be returned. Otherwise, since we were the only two in the house, I would be the only suspect.

A short while later, she was back. She was carrying a big bag of snacks, which she dropped on the floor before marching straight into my room. It was obviously an inspection. I pretended to be completely unfazed. Thank god I hadn't washed my underwear, or I would have been caught red-handed.

She naturally came back empty-handed. Seeing the disappointment on her face gave me a secret thrill. Of course, leaving the underwear in the toilet tank wasn't a long-term solution. The next day at noon, I rushed home from school without even eating lunch. I knew she usually ate out. Sure enough, the house was empty.

The underwear was still there. I soaked it in hot water, added a generous amount of laundry detergent, and scrubbed vigorously to get my scent out.

My sister-in-law changed her underwear frequently and usually let it pile up before washing. She had just done a load that morning, and several colorful pairs were hanging on her bedroom windowsill. I wrung her things out until they were nearly dry, tiptoed into her room, and carefully hung them among the others, spreading them out to make them less noticeable.

I was banking on the hope that she wasn't so meticulous as to remember the exact number of items she had hung out to dry. It was risky, but I had no other choice. If her underwear went missing, she would definitely suspect me.

The sun was strong that day. That evening, she collected all her laundry. To my immense relief, she didn't say a word to me. Things went on just as before.

A huge weight lifted from my chest, replaced by an indescribable sense of guilty pleasure. The thought that she would one day wear that underwear set again made me feel like I was flying.

And so, I began to wait, eagerly anticipating the day I would see that bright purple underwear again. That anticipation grew with each passing day.

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