Kyouka and Ren lay tangled together on the rickety old bed in the abandoned shack they'd stumbled upon by the roadside. The metal sheet walls creaked against the howling wind outside, but inside, the air was thick with their shared body heat or what little remained of it.

Both were completely naked, their clothes discarded in a soggy pile on the floor after their narrow escape from the river. Hypothermia nipped at their edges, making their skin prickle with cold, but they clung to each other desperately, arms wrapped tight in a hug that was as much for survival as it was for comfort.

Kyouka's teeth chattered slightly as she buried her face in Ren's chest. "Sorry, Ren... I've become such a liability for you," she muttered, her voice weak and laced with regret. "I never thought I'd be this weak. Me, of all people."

Ren held her closer, one arm around her waist while his other hand absentmindedly scrolled through his dead phone.

He glanced down at her with a soft smile, though his eyes betrayed the exhaustion from their ordeal. "You're talking like that's a bad thing," he muttered back, his breath warm against her ear.

"I know if I was the one who got weak or wounded, you'd take care of me just as much. I'm doing the same here. It's what we do."

Kyouka lifted her head slightly, managing a faint smile despite the shivers running through her body. "Of course I would," she whispered, her fingers tracing lazy circles on his back. She paused for a moment, trying to shake off the chill, then changed the subject abruptly. "So... is there any signal?"

Ren sighed, tossing the useless phone onto the bedside table with a clatter. "Forget about signal. My phone doesn't even work anymore." He shook his head, frustration evident in his tone.

Kyouka nodded slowly, her expression thoughtful. "That's to be expected after we drowned like that." She paused again, her mind drifting back to the chaos of their escape. Suddenly, her eyes widened as a memory flashed. "Wait... Misa's hand in the car. It was glowing green, wasn't it?"

Ren furrowed his brow, still hugging her tightly. "Yeah, I'm pretty sure we got shot, right? So how did those wounds disappear?" He looked at her questioningly. "You think it's Misa?"

Kyouka shifted slightly in his arms, her naked body pressing closer for warmth. "I do. It has to be her."

Ren tilted his head, skeptical. "How can you tell it's her? It could be something else entirely."

Kyouka took a deep breath, her voice dropping to a conspiratorial whisper despite the shivering. "You know, I've been hearing rumors about Mother. Apparently, there was once someone who looked just like our mother in a guild. Everyone wanted to recruit her to their own guilds because of how good a healer she was. Like, legendary levels. Heard she suddenly left hunter job and went into a hiding because people started to play dirty...just to recruit her."

Ren's face showed a flicker of surprise, but deep down, he wasn't shocked at all. He'd known bits and pieces of this for a while, after all Misa herself had told him these things.

He kept his expression neutral, though, not wanting to reveal too much. "Really? That's... interesting."

Before he could say more, Kyouka started shivering harder, her body trembling against his. Ren tightened his hug, pulling her even closer, their bare skin flush from head to toe.

The intimacy of it all was undeniable, the cold forcing them into a closeness that stirred other feelings. But even as she shivered, Kyouka turned her head back toward him, a blush creeping onto her cheeks despite the chill. "Ren... what is that poking me in the back?"

Ren grinned, a mischievous glint in his eyes as he felt her body react to his growing arousal. "You can't blame me. I have my hot older sister naked with me. This kind of thing is bound to happen."

Kyouka looked forward again, her face heating up even more. She bit her lip, gathering her courage for the question that had been burning in her mind. Finally, she turned slightly, her eyes meeting his. "Ren... do you have a girlfriend?"

Ren was genuinely surprised by the directness, his eyebrows shooting up. But instead of answering with words, he let his hand slide up her side, cupping her breast gently at first, then squeezing it with a firm grip.

Kyouka gasped, her blush deepening to a fiery red because this was the most unusual thing Ren did to her, after all women breasts were nothing impressive in this world yet it felt good to Kyouka when her brother fondled them.

He leaned in, whispering hotly against her ear. "What do you think?" His fingers teased her nipple, rolling it between them, sending sparks through her body.

Kyouka squirmed in his arms, her breath hitching. "Ren, what are you doing?"

"Warming our bodies," he replied with a smirk, his voice low and teasing. "Don't you think this is very effective?"

She let out a soft laugh, turning her head to look at him with a mix of amusement and desire. "When did my baby brother get so wild?" Without waiting for an answer, she twisted around fully, capturing his lips in a wild, passionate kiss.

Her hands roamed over his chest as she mumbled against his mouth, "Oh, how I've missed this." She pulled back just enough to whisper, "I thought you might have gotten a girlfriend and forgotten about me by now. After all, there are a lot of females around you."

Ren kissed her back fiercely, his hands exploring her curves. "Are any of those females my cute, kind, hot, and sexy older sister?" he asked between kisses, his voice husky.

Kyouka shook her head, her eyes sparkling with mischief. "Of course not."

Things escalated quickly from there, the cold forgotten in the heat of their passion. They kissed wildly, tongues dancing in a frenzy of need.

Ren's hands squeezed her breasts firmly, kneading the soft flesh while his thumbs circled her hardened nipples, eliciting soft moans from her. Kyouka's hands weren't idle either; she reached down, cupping his balls gently at first, then squeezing them with just enough pressure to make him groan into her mouth.

Her other hand wrapped around his shaft, stroking it slowly, feeling it throb in her grip. She squeezed his butt too, pulling him closer, their bodies grinding together in a rhythm that built the tension higher.

Ren broke the kiss to trail his lips down her neck, nipping at her skin. "God, Kyouka... you're so perfect," he murmured, his voice thick with desire. One hand slid down to her ass, grabbing a handful and squeezing hard, pulling her hips against his erection.

Kyouka arched her back, pressing her breasts into his chest. "Ren... don't stop," she whispered, her fingers tightening around his shaft, pumping it faster now. She teased the tip with her thumb, feeling the precum bead there. Her other hand massaged his balls, rolling them gently, while she dug her nails lightly into his butt cheek squeezing them, urging him on.

They rolled on the bed, the old springs creaking under them, but neither cared. Ren positioned himself behind her, spooning her closely.

His arms wrapped around her from behind, one hand cupping her breast again, pinching the nipple, while the other slid between her thighs, fingers brushing against her wet folds. "I was so scared," he muttered into her ear, his voice suddenly serious amid the erotic haze. "When I heard about what happened to you... I never want you to worry me like that again."

Kyouka leaned back into him, her body fitting perfectly against his. "As the elder sister, I shouldn't worry you like that. I'm sorry," she muttered, her voice breathy as his fingers explored her.

Ren smiled against her neck, nipping at her earlobe as they were lying down now. "I won't take the sorry just like that." He shifted his hips, aligning his dick from behind with her labia. He didn't push in yet, instead wiping the head along her slick entrance, teasing her, coating himself in her wetness.

Kyouka moaned softly, her hips bucking back instinctively. "Ren... no, I'll take the lead," she protested, though her voice lacked conviction. "I am the woman here. Let me do it..."

He whispered hotly in her ear, his breath sending shivers down her spine, not from cold this time. "Why? Does this hurt your womanly pride?" And with that, he thrust forward suddenly, penetrating her in one smooth motion.

Kyouka's eyes widened, her mouth opening in a loud, unrestrained moan that echoed through the shack. "Ahhh!"

The sensation was overwhelming, his thickness filling her completely, stretching her in the most delicious way. She gripped the sheets, her body arching as waves of pleasure crashed over her.

"What do you think, sister? Don't you feel bad when a man like me takes control of your womanly body? Doesn't it feel like this is how it's supposed to be?" Ren asked in a sarcastic tone, to which Kyouka responded with a moan.

"Mmmh~ Ren, congrats on losing your virginity… I took your virginity, baby! I'm so happy. I wanted this… I wanted to take my baby brother's virginity," Kyouka muttered, unaware that Ren had already had so many women sucking his dick with both their upper and lower lips.

"Thank you, Kyouka… and I'm glad I took yours too," Ren replied, noticing a little blood dripping onto the sheets, decorating them with a faint red stain.