One stormy night, rain poured down relentlessly, trapping everyone inside the walls of the Red Flat. Meira, my beloved girlfriend, was stuck at her workplace, leaving me with the task of babysitting her two teenage daughters, Tira and Cira. Despite the circumstances, I didn't mind the responsibility. After all, they lived right next door, and I had grown somewhat accustomed to their youthful presence.

Cira, the younger of the two, was around 17 years old, while Tira, the older sister, was 19. Their youthful bodies, still in the process of blossoming into womanhood, couldn't help but catch my attention. Yet, I reminded myself to maintain a boundary, a careful distance, knowing well the consequences that could come from crossing that line.

As the rain cascaded outside, the girls immersed themselves in the world of online games, their laughter echoing through the apartment. Their carefree demeanor seemed to make them oblivious to my presence as if I were nothing more than a fixture in the background. I watched them, observing their childish behavior, but also aware of the desires that lay beneath the surface.

However, my cautiousness around Tira was not unfounded. She had stumbled upon some files on my computer, files that exposed a side of me that I had kept hidden, locked away from prying eyes. Visual novels, with their tantalizing tales of forbidden desire, had unlocked a part of me that yearned for more. And so, I became even more vigilant, acting as a father figure to both girls, ensuring that my true nature remained concealed.

But the stormy night held more surprises in store for me. As I sat there, fulfilling my duty as a babysitter, Tira confronted me with a question that caught me off guard. "Why were you hugging Naomi yesterday?" she asked, her eyes piercing into mine, searching for a truth that I struggled to articulate.

I quickly composed myself, trying to find the right words to explain the situation. "Naomi was in a precarious position on the terrace," I began, my voice attempting to convey a sense of urgency. "I held her tightly to prevent any mishaps, to keep her safe."

But Tira's jealousy seeped into her tone as she probed further, her words laced with suspicion. "But you both seemed so happy. Are you attracted to her?" she questioned, her eyes narrowing with each passing moment.

I felt a knot forming in my stomach, knowing that my response would be scrutinized. "It was merely a moment of joy," I replied, desperately trying to find the right words. "Naomi was playing with my pet hamster on the terrace, and I was ensuring her safety. Nothing more, Tira."

She leaned in closer, her voice almost taunting. "She's beautiful, isn't she?" Tira commented, a mischievous smile dancing on her lips as if she had already drawn her conclusions.

I attempted to answer, to defend myself, but Tira bombarded me with accusations and questions, accusing me of being a pervert, of harboring ulterior motives with her friend. Frustration welled up inside me, threatening to spill over.

"Look here!" I finally snapped, my voice filled with anger and indignation. "You and Naomi sought my help, and I allowed you to use my computer. This is how you repay me? Show some respect, young lady!"

My outburst seemed to shock both Tira and Cira, who had been silently engrossed in their video games. The room fell silent, except for the sounds emanating from their screens. I gazed outside, watching as the rain continued to pour, ensuring that we were trapped in the Red Flat for the long night ahead.

With nothing else to do, I slumped onto the couch, mindlessly watching a silly TV quiz show. Exhaustion eventually overtook me, and I drifted off to sleep, the events of the night swirling in my dreams.

I sleep, but I can still hear them speaking in the back of my mind. Cira asked her sister why she was harsh to me. Then, I knew for sure that Tira had read and known about my armpit fetish from the visual novel I wrote. She seemed to have a copy of it, as she could speak about it in every detail. She read my mind as clearly as her palm, knowing that I love to peek into women's underarms.

"But you promised me!" I heard Cira forcing her sister into something. I wasn't clear about it, and slowly I fell asleep.

As I drifted off to sleep, little did I know that Tira was already on the move, her sister Cira joining her in a clandestine mission. They were determined to find my apartment keys, their actions shrouded in secrecy. The rain continued to pour outside, providing the perfect cover for their covert operation.

"Hurry!" Tira whispered urgently to Cira, her voice barely audible over the sound of the rain. "We have to be quick before he wakes up!" The two sisters moved silently, their footsteps barely making a sound as they searched my sleeping form for the keys to my apartment.

Finally, their efforts paid off as Tira's fingers brushed against a cold metal object. She held her breath for a moment, hoping that I wouldn't stir from my slumber. With a triumphant smile, she retrieved the keys and passed them to Cira, who clutched them tightly in her hand.

"Got them!" Tira whispered, a mix of relief and excitement evident in her voice. The sisters exchanged a glance, their eyes filled with a combination of curiosity and apprehension. Now that they had the keys, what secrets would they uncover within the confines of my apartment?

As they left my side, their footsteps fading into the distance, I finally allowed myself to open my eyes. The room felt different now, charged with an unspoken energy. I was left with a flurry of questions, unable to shake the feeling that something significant was about to unfold. The storm outside mirrored the turmoil within me.

"What does that rascal want from me now?" I asked myself. I knew I would find out soon enough.

As I lay there, feigning sleep, I listened intently to their hushed voices and the faint sound of their footsteps in the corridor. They were returning, thinking they had completed their mission without arousing any suspicion. Little did they know that I was fully aware of their actions.

I could sense their presence as they approached my slumbering form. Their hands moved with practiced precision, silently returning the apartment keys to my pants pocket. The weight of their breath hung heavy in the air, a mix of relief and nervous anticipation. What were they planning?

During their whispered conversation, I strained to catch every word. Cira's voice carried a hint of urgency as she said to her sister, "Now, you do what you promised me yesterday." Tira hesitated, her voice laced with reluctance, "Not now, not here!"

But Cira was determined, pushing her sister further, "Do it, or I'll tell Mom!" Tira's voice rose in frustration, a hint of resignation seeping through, "Fine, little princess! Just this once!" The tension between them was palpable, and I couldn't help but wonder what their secret agreement entailed.

I felt Tira's hand on my lap, her touch sending a jolt of electricity through my body. I was taken aback by her boldness, but I couldn't deny the curiosity bubbling within me. She unzipped my pants, exposing my manhood to both her and her sister, Cira. It was astonishing how captivated they were by it.

Their breath tickled my skin as they leaned in closer, their fascination palpable. Tira wet her fingers and began to gently rub the head of my penis, a sensation that sent shivers down my spine. I closed my eyes, pretending to be asleep, savoring the pleasure that coursed through me. It was a strange, intoxicating pleasure that I had never experienced before.

As Tira continued to stimulate me, a forbidden thrill surged through my veins. Cira took a picture of Tira holding my exposed penis, capturing the moment of vulnerability. My heart pounded in my chest as Tira's lips brushed against me in a gentle kiss. Another picture was taken as she took me into her warm mouth, her soft sucking intensifying the waves of pleasure.

Before Meira, I had always been curious about exploring my desires with them, but this encounter surpassed any fantasy I had ever entertained. The sensation of Tira's lips and tongue was overwhelming, and I fought to suppress my moans of pleasure. I gripped the sheets as she increased her movements.

Within moments, my body trembled with ecstasy, releasing into Tira's mouth. I maintained my pretense of slumber, mumbling their mother's name as if I were having a vivid dream. Cira took one final picture, capturing the moment of blissful satisfaction.

I couldn't believe what had just transpired. It was an experience beyond anything I had ever imagined. As I reflected on the encounter, I overheard Cira whispering questions to Tira. Curiosity got the better of me, and I couldn't resist peeking through my partially closed eyes.

To my astonishment, Tira crouched down and licked around my crotch. A shiver shot down my spine. She then playfully poked the droplet of semen that had formed and offered it to Cira. Tira smirked mischievously, asking if it tasted salty. Cira nodded, her eyes filled with curiosity and delight. In an innocent voice, she inquired if Tira had tasted George as well.

Tira wiped her mouth nonchalantly with the edge of her pajama cloth, an act that belied the intimacy of the moment. "Of course," she replied confidently, her voice dripping with self-assurance. "That's what grown-ups do when they love each other." Her words carried a mix of naivety and rebelliousness, reflecting her youthful spirit.

Cira's gaze remained fixed on my motionless body, her voice tinged with curiosity and concern. She wondered if I had passed out. Tira shrugged dismissively, a smirk playing on her lips. "Tomas gets tired easily," she explained, her voice laced with amusement. "We'll have plenty of time to explore and have fun." There was a sense of confidence in her words as if she knew exactly how to navigate the complexities of our unconventional desires.

Tira carefully tucked my penis back into my pants and zipped them up. I stole another peek and caught Cira's eyes on me. She appeared shocked, knowing that I was aware of their actions, but too scared to let her sister know. So she pretended not to see me.

I realized that I had just embarked on my first foray into teenage curiosity, an experience that would forever be etched in my memory. The uncertainty of opening my eyes and seeing the girls' satisfied expressions was overwhelming. So I retreated into my slumber, pretending not to know, finding solace in the escape it provided.

An hour later, it was Meira's voice that startled me awake, thanking me for looking after her two mischievous daughters.