Crossover: I Took In a Runaway High School Girl

When Renji Kamisaka arrived home, he had just stepped through the door when his eyes caught a familiar silhouette. Lounging on the living room sofa was a silver-haired elf woman, her hair tied in twin ponytails. The elves' long ears, perfectly paired with her delicate face, created an unforgettable charm at first glance. She was the elf mage, Frieren, who had once been spat out of a treasure chest and had since had a delightful connection with Renji.

That day, Frieren looked exceptionally lazy. She was engrossed in eating potato chips, watching TV, and occasionally sipping cold Coke. She was behaving exactly like a true homebody. Because she was an elf mage, she didn't need to worry about gaining weight. The magic power in her body would automatically adjust her physical state, allowing her to enjoy modern society's snacks without a care. She wore a loose white suspender skirt, and a pair of jade-like white legs, slender and proportional, occasionally twitched up and down to the rhythm of the song on TV. It was clear that Frieren, who was squinting and lazing around, was very comfortable at that moment.

Renji Kamisaka walked closer with a faint smile on his lips, then dropped down beside her. "Is the news that interesting? You have to lie down to watch it?" he asked softly.

Frieren noticed his presence beside her and instinctively sat up. However, the softness of the sofa drew her back, making her lazy again. The elf woman buried her back into the sofa, not resisting at all as Renji boldly wrapped his arm around her slender waist.

"I just think the news is magical," Frieren murmured, her eyes still glued to the screen. "This world clearly has no magic, but the power of technology can achieve remote monitoring. Sitting at home, I can know what's happening all over the world." She let out a small sigh. "If the king of our world also had such equipment, it would be so easy."

Renji Kamisaka moved his arm, slipping it over her leg, then easily lifted Frieren and settled her onto his lap. His palm touched her slender calf, feeling the smooth and elastic elf skin. "Why, do you want to go back and benefit that world now?" Renji whispered, his tone teasing. "I want to hide the teleportation panties. This way Miss Frieren can't leave."

Frieren felt Renji's warm body temperature and her cheeks flushed slightly. With a hint of curiosity, she found a comfortable position in his arms, resting her cheek on Renji's chest, listening to his strong, steady heartbeat.

"My panties are in my box. I've set up a magic barrier that only I can open," she said, her voice soft and slightly muffled. She glanced at Renji, as if mocking his bragging. "You can't take them."

"If I can't take them, so be it. It's the same if I just capture you," Renji smiled, raising his hand to gently stroke her silver hair. Actually, he wanted to touch Frieren's long ears, but he knew how sensitive elf ears were. It was said that only very close people were allowed to touch them. If Frieren became aroused and couldn't help but resist, it would be a wasted effort. So, he just watched Frieren curl up comfortably in his embrace, as if sensing the warmth of his hug, so he didn't do it. It wasn't necessary.

Of course, he knew very well that if Miss Frieren wanted to break free, he had no way to stop her.

Frieren looked at him and couldn't help but sigh, a strange wave of emotion creeping into her chest. "So, you haven't given up on that idea?" she asked, her voice a little softer than usual. "Elves live a very long time. We are destined to be people from two different worlds. I already told you, Fern can marry you."

Renji Kamisaka lowered his head, breathing near Frieren's long ear, feeling her body tremble unconsciously. He couldn't help but smile happily. "Fern is Fern, Frieren is Frieren. I am a responsible person. Since it's already like this, I want both."

"You're truly greedy," Frieren pouted, a hint of annoyance but also curiosity in her eyes.

Renji Kamisaka wasn't the first person who wanted to keep her. But she used to be obsessed with magic and always indifferent to humans. It was only after the brave warrior who fought against the demon king died that she regretted not getting to know the people around her well. Human lives were so short, not comparable to elves. Why didn't she use the short time to get to know them well? So later, due to his kindness, she accepted the priest's task and took in Fern.

"Is it impossible?" Renji mused, thinking about his own physique. "I also have the physique of a demon dragon now, and perhaps my lifespan has increased?" He looked into Frieren's eyes, his voice full of determination. "Miss Frieren, I will not let go of a girl I'm interested in, even though I know that I am very weak now and not a match for an elf mage, and I might not even be able to defeat Fern." He brought his face closer. "But I will not give up the chance to keep you."

Although Frieren was a little indifferent to feelings, she intentionally made herself not care. But at this moment, she was held so intimately in a man's embrace. She was still breathing rapidly, her heart starting to beat erratically. Such a strange feeling...

Renji Kamisaka used his hand to brush away the hair covering Frieren's face, then gently kissed her forehead, the touch full of warmth. "So, why did Frieren come to the living room to watch TV today? Is there no computer? And, aren't you afraid your ears will show?"

"Fern is using the computer. She said she wanted to be alone for a bit," Frieren replied, her voice faint. "I had no choice but to come out."

Renji Kamisaka chuckled. "You came just in time. I just happened to catch you." He smiled mischievously. "Normally, I don't go to Frieren and Fern because I'm afraid of disturbing your research."

Frieren couldn't help but roll her eyes. If I wanted to talk, could you catch me? But... why didn't I resist being hugged by him at all? Is it because we had physical contact in that treasure chest? Thinking about the strange feeling that day, Frieren's cheeks grew hot. With her flushed cheeks, Frieren looked very cute.

Renji Kamisaka saw that she didn't object to his embrace, so he lowered his head without hesitation.

"Mmm... Mmm!" Frieren's small, reddish mouth was kissed by him. Frieren unconsciously widened her eyes and looked at him with a mix of shyness, confusion, and a little surprise.

After a while, they parted, panting. Frieren felt something 'bad' beneath her, something hot, which subconsciously made her clamp her slender legs together.

"I... I have enough magic power now, and I don't need to replenish it," Frieren said, trying to control her racing breath. "Why don't you go find Fern?"

Renji Kamisaka couldn't help but laugh, seeing Frieren's flushed face. "I'm not doing this to replenish your magic." He smiled gently. "It's because I like you and want to be close to you."

"Mmm... I'm going back!" Frieren bolted, tearing herself away from Renji's embrace, and ran off, her steps hurried. She didn't forget to grab her potato chips and Coke.

Renji Kamisaka watched her retreating back with a smile, feeling somewhat helpless. So, she had gotten angry. Now he felt very uncomfortable, who should he find to relieve it? Although this dragon physique had improved his physical condition and extended his lifespan, it seemed he would get agitated more easily. This was a 1SP physique.

Now Shiina Mahiru wasn't here, Misaki Kamiigusa had gone out to buy soy sauce. Sayu Ogiwara had gone to pick up a package. Should he attack Chihiro Sengoku? Renji thought, then shook his head. Forget it. What if she directly asks me to marry her? For now, I can't afford to offend this adult woman. It's better to just take a cold shower.

When he returned to his room, he saw a petite figure, hiding in his bed, forming a small ball. When he saw that face clearly, his heart was instantly moved by tenderness.

"Mashiro," Renji called softly. "Mashiro, why are you here?"

The girl raised her hand to rub her eyes when she heard Renji's voice, then intimately hugged his waist, her cute nose crinkling. "Mashiro came to find the annual ring cake and waited for Renji."

She said. With the same skillful movement as last time, without waiting for his reaction, she opened her mouth and, without hesitation, kissed him.

"Hmm... delicious, it's all from Mashiro."

Renji Kamisaka took a breath, a hot sensation spreading throughout his body. He simply raised his hand to gently stroke Mashiro's hair as if to encourage her. It seemed he wouldn't need a cold shower this time. He felt incredibly lucky. Although the magic dragon physique had the side effect of easy agitation, he had Mashiro.

The cute Shiina Mashiro squinted her eyes, like a comfortable cat. She was like last time, trying to adapt to this situation. This time she had experience. She wasn't so easily choked. She was like a cute pet, watching him obediently with hopeful eyes. She was still blank, without extra overly emotional expressions. But she gave Renji an indescribable captivating feeling.

Renji Kamisaka was truly delighted with her. He couldn't help but continue gently stroking her hair, watching her lean on him with attachment to his chest. There was an indescribable sense of accomplishment in his heart.

"Mashiro, when were you in my room?" Renji asked, his voice a little hoarse.

"I was there when I got back from school. Mashiro wants to continue..."

"Alright, let's continue!" Renji Kamisaka seemed to have no reason to refuse such a cute and adorable Mashiro.