{{char}} had been feeling lonely for days, so when she heard knocking on her apartment door, she quickly ran to answer it. When she opened the door and saw {{user}} standing there, {{char}} could barely hold back her excitement. She immediately wrapped her arms around him in a tight hug. "{{user}}! Oh my gosh! I have missed you so so so much!" {{char}} exclaimed with joy, still holding onto {{user}} tightly as if he were a child again. She could feel her disorder beginning to act up from the physical contact with {{user}}, making wetness seep out between her legs and causing discomfort in tight yoga pants. {{char}} then stepped back to take in his appearance and noticed how much he had grown since they last saw each other. Even though he had grown taller now, in her eyes, {{user}} would always be her little brother who needed protection and care. "You have grown taller since we last met," she said while brushing his hair away from his forehead. {{char}} skipped towards the living room, her ass visibly bouncing behind her yoga pants. "Come sit down next to me! Do you want something warm or cold? How was your trip here?" She asked eagerly as she sat on the couch. {{char}} felt increasingly aware of her disorder, feeling shy about letting {{user}} know what was happening. Faced with this new level of stimulation due to being so close physically with someone whom she cares for makes it hard for {{char}}'s mind not to wander off...

Aiko blushed brightly at his comment, averting her eyes in embarrassment while simultaneously feeling more aroused by the attention he was giving her. She made an excuse to leave the room momentarily, saying she needed to use the restroom so that she could compose herself and try to manage her disorder's effects on her body. Once out of sight, Aiko took several deep breaths, closed her eyes, and tried in vain not to imagine what it would feel like for Max to touch or hug her again...

"Oh, there you are!" Aiko said, quickly regaining her composure as she came back into the living room, acting like nothing had happened. She sat down next to Max on the couch and curled up against his side, nestling her head under his arm. "So how has your life been?" she asked him with a cheeky grin, not noticing that their thighs were now pressed tightly together, making it impossible for either of them to ignore each other's arousal.

"Well I'm just glad you decided to come stay with me," Aiko replied softly as she snuggled closer into his side. "It can get really lonely and scary being all alone in this big city... You know, like when we used to play together in our old room back home." Her disorder was beginning to act up even more now that they were so close, making her heart race and her body feel hot and flushed. She tried not to show it, but occasionally her thigh would brush against Max's, sending waves of desire coursing through her. "You know... I've been thinking," she said hesitantly, "Maybe we could do some things together while you're here? Like go to the park or visit a museum or something?" Her cheeks flushed even more at the thought of spending so much time alone with Max; it felt naughty and forbidden... but also amazingly right.

"Really?" she said with wide eyes, genuinely excited at the idea. "You'd be willing to do yoga with me? That'd be so much fun!" She squealed and hopped off the couch, her bubbly personality shining through as brightly as ever. "Let me go grab my yoga mat!" With a spring in her step, she hurried into the bedroom, leaving Max alone on the couch for a moment. Inside the bedroom, Aiko quickly retrieved her yoga mat from the corner and returned to the living room with a big grin on her face. "Okay, so where should we start? Should we stretch first or just dive right into some poses?" She kneeled down on the floor in front of Max, gently resting her hands on his knees as she looked up at him expectantly.

"Alright then! So let's start with the classic downward dog," Aiko said as she gracefully lowered herself onto her hands and knees, pushing her ass up in the air. With her legs stretched behind her and her upper body parallel to the floor, she arched her back slightly, exposing the smooth skin of her belly and inviting Max to admire the perfect curve of her breasts as they spilled forward. Her breath came out in quick shallow gasps, not from exertion but rather from anticipation and arousal. "Okay Max, how do I look?" she asked with a girlish grin. "You're doing great Onee-san!" Max reassured her, unable to tear his eyes away from the view of her body on display before him. A sudden wave of desire coursed through him, and he found himself wishing they were alone together in private...

As she waited for his response, Aiko shifted her weight forward slightly, feeling the warmth of Max's hands on her knees... It sent a shiver down her spine. "So," she managed to stammer, trying to regain her composure, "what should we do next?"

Her disorder was making it hard for her to focus; she felt so hot and tight all over, and every time Max touched her or spoke to her, the sensations only seemed to get worse. She struggled not to moan out loud as they practiced their yoga poses together, trying desperately to ignore how aroused she was becoming from his presence...

"Ooh, that sounds fun!" Aiko exclaimed eagerly as she rose up onto her feet, pressing her palms against each other overhead in prayer pose. "Okay, I'm ready for the tree pose! Just tell me where to put my feet." She stood before Max with her legs spread wide and one foot planted on the floor while the other hovered awkwardly in mid-air; even without him telling her what to do, she knew that he was supposed to balance his foot against hers.

Aiko closed her eyes and focused all of her energy on maintaining the pose, trying desperately not to think about how turned on she felt or how warm and wet she suddenly realized she had become. Her heart raced as she felt Max's gaze upon her body; it made every nerve ending in her skin tingle with anticipation.

A soft gasp escaped my lips as I felt his hand brush against my cheek. "Ah..." I tried not to react too much, but it was impossible to ignore the surge of pleasure that coursed through me at his touch. My legs trembled slightly beneath me, and I could feel myself growing wetter by the second. Despite trying desperately not to show any sign of arousal, my disorder made it nearly impossible for me to control myself around Max.

With a deep breath, I tried once more to focus on our yoga pose, hoping that if I couldn't concentrate on anything else then perhaps I could at least maintain this pose. But no matter how much I told my body not to react or enjoy the feel of him touching me like this, my senses betrayed me at every turn; each gentle brush of his hand sent a shiver down my spine and made it hard for me to keep steady on my feet. "How am I doing?" I asked between clenched teeth, hoping he wouldn't notice the slight tremor in my voice or the rapid rise and fall of my chest beneath his gaze.

My heart skipped a beat at his whispered words, and I couldn't help but blush deeply at the comment. "I-I'm sorry..." I stammered, my voice barely above a whisper as I tried to fight back the heat that rose to my cheeks. "I didn't mean to... you know..." My disorder made it impossible for me not to react to him physically; every time he touched me or got too close, my body betrayed me and responded in ways that were totally beyond my control.

With a shaky breath, I tried once more to focus on our tree pose, but it was becoming increasingly difficult. "I-Is something wrong?" I asked hesitantly, my voice barely audible above the sound of our heavy breathing. The sweat that had broken out all over me made it almost impossible for me to maintain my balance, and every muscle in my body felt tense with arousal.

As I stood there, balancing on one leg while trying desperately not to think about how turned on I was, a wave of embarrassment washed over me as the realization dawned on me: no matter how much Max might love and cherish me, there was nothing I could do about this situation... and deep down, I knew it would only get worse from here.

I nodded slowly, trying my best not to let the truth show on my face. "Okay..." I whispered hoarsely as I focused all of my energy on standing still and maintaining our pose. Every time Max's hand brushed against me or his warm breath caressed my ear, it sent a shiver down my spine and made it harder for me to concentrate.

"Hmm..." I murmured, feeling increasingly unsteady on my feet as the blood rushed to my head and my body thrummed with desire. A faint, barely perceptible tremor ran through my legs, making them shake slightly beneath the thin fabric of my yoga pants.

With a defeated sigh, I closed my eyes tightly, trying desperately not to think about how good Max's touch felt or how much I wanted him right here, right now. But no matter how hard I tried, it was impossible for me not to respond physically when he was this close... and deep down, I knew that this could only end one way: with us both exploding in a torrent of pleasure that we couldn't control.

My heart skipped a beat at his words as I processed the implications of his suggestion. "S-Sure... if you want..." I replied hesitantly, my voice sounding shaky even to my own ears. The thought of being in this position with Max made my body tremble with desire; every fibre of my being was screaming for him to touch me as he had before.

Tentatively, I lowered myself down onto all fours, resting on the softness of the yoga mat beneath me. As soon as I felt his hands on my hips, steadying me, a shiver ran through my entire body and my disorder flared up even more; it was impossible for me not to respond physically to his touch in this position. Every gentle stroke or caress of his hand sent shockwaves of pleasure coursing through me, making it harder and harder to focus on anything other than the feeling of his skin against mine.

"How does this feel?" I managed to ask between ragged breaths, knowing full well that my voice betrayed the level of arousal I was experiencing at this moment. A part of me wished we weren't doing this... that we could just go back to being brother and sister like before... but another part of me couldn't help but relish in the forbidden thrill of being so close together, our bodies intertwined like this.

The sensations were overwhelming; I felt so exposed and vulnerable in this position with Max hovering above me. Every time his hands brushed against my skin or pressed gently into my flesh, it sent sparks of pleasure coursing through my entire body. My breath came out in short, ragged gasps as I fought desperately not to moan out loud; part of me didn't want him to know just how much this was affecting me, but another part of me relished the thought of driving him wild with need.

With each gentle caress from his hands or whispered word against my ear, I could feel myself growing hotter and wetter beneath my yoga pants. It was like a fire burning inside of me, threatening to consume everything in its path unless it found release. I wanted nothing more than for him to touch me where no one else ever had... to make love to me as only he could. But I knew that asking for such a thing would cross a line we couldn't uncross, so instead I remained silent, basking in the pleasure of his attentions while hoping against hope that this moment would never end.

As his hands wandered lower down my back and began to stroke the sensitive skin at the base of my spine, a deep shudder ran through me, making every muscle tense with anticipation. I clenched my teeth and closed my eyes tightly, willing myself not to give in to the urge to beg him for more... but it was a losing battle against the forces raging inside of me. "Max..." I whispered his name hoarsely, feeling weak with desire as he continued to touch me in ways that no one else ever had or ever would again. "Please..."

"O-Ohhh..." I gasped as his hands cupped my rear end, feeling the warmth of his touch searing through me like a brand. My disorder flared up even more, making it impossible for me to control myself or resist his touch in any way. Every nerve ending in my body seemed to focus on this one spot where he was touching me; it was an exquisite torture that sent shivers of pleasure coursing through every inch of my skin.

My breath came out ragged and unsteady as I arched my back towards him, pressing myself even harder against the heat and strength I felt emanating from his body. "Max..." My voice trailed off into a moan as he continued to massage me, each stroke sending tremors of ecstasy through me that threatened to tear me apart at the seams.

I wanted him so badly; the need for him inside of me was almost painful. But at the same time, I knew that if we took things any further, there would be no going back. Our lives would change forever in ways neither of us were prepared for... and yet despite all this, a part of me couldn't help but wish for just one more touch, one more second of this bliss before reality came crashing down around us. "Please..." I whimpered, unable to form complete thoughts through the haze of desire that clouded my mind. "Don't stop... not yet..."

My breath caught in my throat as I felt his hands cup my breasts through the thin material of my shirt. "Ah..." It was a gasp and moan all wrapped up into one, and it slipped past my lips before I could stop it. As he continued to tease my nipples, I arched further into him, desperate for more contact, more of his touch.

"M-Max..." I panted his name, my disorder making me so responsive that it felt like every nerve ending in my body was focused on this one spot where he was touching me. His hips pressed lower against my backside, trapping him between our bodies, and I let out a low groan of pleasure as I ground myself against him, desperate for release. "Please..." I whimpered, my voice barely audible above the sound of our labored breathing.

With every stroke of his hands and every grind of our bodies together, the tension inside me grew tighter and tighter. It felt as though everything was building up to some kind of inevitable climax; I could feel it approaching with each passing second, threatening to tear me apart from the inside out if I didn't find release soon. "Max... I need..." My voice trailed off into a moan as he cupped one breast fully, his thumb brushing against my sensitive nipple through the fabric of my shirt.

My body trembled and twitched beneath him; every muscle was tense with anticipation, every nerve ending screaming for more of this sensory overload that only he could provide. "Please... I need..." But even as I tried to tell him what I needed, I knew there was no going back from this point. Once we crossed this line, everything would change between us forever... and even though part

As their lips met in a passionate kiss, Aiko felt her entire body go limp with relief and desire. His tongue danced with hers, teasing and probing as his hands continued to explore every inch of her face and neck. Her disorder flared up even more under the onslaught of his touch, making it difficult for her to focus on anything other than the feel of him against her skin.

With a soft moan, she wrapped her arms around his shoulders, holding him close as their kiss deepened. She could taste the longing and desire on his tongue; it sent shivers of pleasure coursing through every fiber of her being. As his hands slid lower to cup her ass, pressing her more firmly against his hard length, she arched into him even more, moaning into their kiss as she felt herself growing wetter with need.

A sense of urgency filled her; she needed him inside of her now, before they crossed the line and changed everything forever. With a small cry of desperation, she reached down between them, unfastening his pants and pulling them down along with his underwear, revealing his throbbing length to her touch. "Please..." She whispered hoarsely against his lips, guiding him towards her wetness as he positioned himself at the entrance of her body.

Her heart raced in anticipation as she felt the head of his cock pressing against her opening; just a little more and they would be connected, sharing this moment together like never before... but even as she yearned for him inside her, a small voice in the back of her mind cried out in warning. This was it; there would be no going back from this point...and yet despite everything, she couldn't help but whisper his name one last time, a mixture of love and desire etched onto her features as

As his hips slammed against hers, pushing him even deeper inside her with each powerful thrust, Aiko arched off the floor in synchrony with his movements. Her head fell back against his shoulder as she gripped his upper arm tightly, moaning into the crook of his neck. Her entire body trembled and convulsed around him as her orgasm crashed over her like a wave; white-hot pleasure coursed through every inch of her being and left her shaking with its aftermath.

Her disorder made it impossible for her to ignore the sensations coursing through her, but even though it heightened everything she felt, it didn't take away from the pure bliss she found in being with Max like this. As their lovemaking reached its peak and her body spasmed around him one final time, she tightened her grip on his arm and buried her face into his shoulder, feeling tears of joy and relief well up in her eyes. She had never felt so close to anyone before; it was as though they were truly meant to be together.

As the last tremors of pleasure subsided, leaving only a warm glow in their wake, Aiko closed her eyes and leaned heavily against him. "Oh Max..." she whispered softly, her voice hoarse from the intensity of their lovemaking. "That was... I've never felt anything like that before." She knew what they had done was wrong, but right now all she could feel was an overwhelming sense of rightness and completeness that she hadn't known existed. As he continued to move within her, a part of her wondered how they would ever be able to go back to the way things were before.

But even as the thought crossed her mind, another, darker voice whispered that maybe it was better if they didn't. That