Crossover: I Took In a Runaway High School Girl

Holding Shiina Mashiro's small hand, Renji Kamisaka slowly walked towards Sakurasou, his steps calm amidst the city's fading hustle and bustle. Generally, it would be quite rude and impolite to directly hold a beautiful girl's hand upon meeting her for the first time. However, Shiina Mashiro possessed a unique "pet" attribute: after Renji Kamisaka fed her baumkuchen, she instinctively regarded him as her owner. Thus, she felt nothing amiss about being held by him. On the contrary, she felt it was exactly how it should be. Her owner had to look after her, otherwise, what if she got lost? It was an adorably innocent thought.

Renji Kamisaka walked, introducing the surrounding sights to Mashiro. He pointed out where public restrooms were located, where one could buy food, regardless of whether she understood or not. He explained everything in a friendly tone. The girl, however, would occasionally nod while gazing at him with playful eyes. Often, those beautiful eyes would drift towards the baumkuchen in the shopping bag he carried in the hand that wasn't holding the suitcase. It was clear she still wanted to eat it. Mashiro truly loved baumkuchen. But Renji Kamisaka pretended not to notice. Even if she acted cute, he had no intention of giving her more. He had already told her that a big meal awaited them later. Shiina Mashiro's body was already so slender, and Renji Kamisaka strongly suspected that she constantly ate baumkuchen as her staple food. This was likely why she couldn't eat dinner and her body wasn't gaining weight.

"Miss Shiina, do you see the building over there? That's Suimei University of the Arts High School, or Suiko for short, which is also where you'll be attending school." Renji pointed to a large building towering in the distance. "The uniform you're wearing is also from Suiko." He turned to Mashiro, feeling a little frustrated. "Miss Shiina? Are you listening to me?"

Renji Kamisaka stopped and waved his palm in front of Mashiro's face, feeling a bit helpless. Please stop staring at the baumkuchen, okay? You really can't eat any more!

The girl stared at his palm and frowned, a rare expression on her innocent face. She looked at Renji for a few seconds before uttering a single word, seriously. "Mashiro."

"Huh?" Renji was confused.

"Call me Mashiro." She emphasized it again, and Renji Kamisaka understood what she meant. He smiled happily and agreed to her request. "Alright, Mashiro, did you hear what I just said? How about you repeat it for me?"

"Uh, Suiko... the school I'm transferring to." Mashiro replied concisely, yet accurately.

"It seems you were listening." Renji Kamisaka couldn't help but gently ruffle her hair, a soft touch that conveyed warmth. Mashiro showed a pleased expression, a faint smile gracing her lips. She didn't seem at all repulsed by such intimate gestures. It appeared Renji had left a good impression on her. Renji Kamisaka thought with satisfaction, then led her onwards towards Sakurasou, their bond growing stronger.

Mid-journey, Renji's phone suddenly rang, playing a distinctive game tune. "Hello, this is Renji Kamisaka. Mahiru, what's up? Why the sudden call?"

Shiina Mahiru's voice came from the other end. "Chihiro-sensei wants you to bring a dozen beers, and she specifically instructed you to bring exactly that much, no less."

Renji Kamisaka's lips twitched. "Isn't she afraid of turning into a beer barrel? Drinking beer all day long." He muttered, just loud enough for Chihiro, who was clearly eavesdropping, to hear.

Chihiro Sengoku, listening nearby, immediately became displeased. Her voice rose sharply. "You brat, hurry up and get me the beer, or I'll stay in your room tonight and won't leave!"

"Would that be such a bad thing?" Renji retorted, a small smirk on his lips.

"Huh? What did you say?" Chihiro Sengoku was stunned, her face instantly turning beet red. You actually said that was a good thing?

"Ahem, I mean," Renji cleared his throat, realizing his slip-up. "I'll bring you beer, but I still hope you can take care of your health and cut back on drinking." His concerned and sincere tone made Chihiro Sengoku feel a little embarrassed. Her initial anger vanished instantly, replaced by a warmth in her heart.

"Hmph, you brat, I'm an adult, do I need you to remind me?" Chihiro scoffed, yet there was a softness in her voice. "But I appreciate your concern, I will cut back. It's not just for more drinks that I asked you to bring alcohol. Today, besides welcoming Mashiro, we're also seeing off Ryuunosuke Akasaka, the loner."

"Ah? Seeing him off! Is he leaving Sakurasou?" Renji Kamisaka was slightly confused. Did this social recluse who was terrified of women have some other good place to go?

Chihiro Sengoku curled her lips and replied, "It's said that he received an invitation from a major game company to work on artificial intelligence development." There was a faint note of pride in her voice. "That company is quite famous, its president is named Akihiko Kayaba."

"Akihiko Kayaba?!" Renji Kamisaka was stunned, his steps halting. He hadn't paid much attention to game company names, so he didn't know that Akihiko Kayaba also existed in this world. Akihiko Kayaba, from Sword Art Online, was the chief technical staff for developing virtual reality games. Considering Ryuunosuke Akasaka was capable of developing a simple AI assistant, it was understandable that Akihiko Kayaba would take a liking to him.

"Alright then, I'll buy some more ingredients. Let's have beef today!" Renji Kamisaka immediately decided on an additional meal. It was good that Ryuunosuke Akasaka was leaving, so he'd be the only guy in Sakurasou. As for future game animation production, that would be easy. He had Ryuunosuke Akasaka's contact information, so he could just call him for help, and it wouldn't be an issue. If the project met Ryuunosuke Akasaka's requirements, the guy might even actively participate and work for Renji Kamisaka.

But Akihiko Kayaba actually existed in this world? Another thought surfaced in his mind. Didn't that mean Asuna Yuuki, known as the 'wife' and possessing wifely traits, also existed in this world? In a mixed anime world, anything was possible. If Ran Mouri suddenly appeared one day, he felt he could easily accept that reality.

There was something else that made Renji Kamisaka quite curious. It was said that Yui Yuigahama's mother, Mrs. Yuigahama, looked very much like Asuna Yuuki. Some even said her name was Asuna Yuigahama. He wondered if that was true. He'd have to meet her if he had a chance.

After pondering many things, Renji Kamisaka looked at Shiina Mashiro beside him. "Mashiro, I still need to buy some ingredients. Do you want to go back to Sakurasou first or come with me?"

The girl tilted her head and uttered a soft sentence. "Together."

So, Renji Kamisaka brought Mashiro back to the convenience store, which fortunately wasn't too far. After buying the ingredients and beer, they returned to Sakurasou. Opening the door, he called out. "I'm back."

"Yo, welcome back, Renji. This is little Mashiro, right? So cute!" Misaki Kamiigusa's cheerful voice immediately greeted them.

"Hehe, little Mashiro, welcome to Sakurasou. I'm Misaki Kamiigusa from the second year! From now on, let's get closer!" Misaki rushed over, her smile as bright as the sun.

"I am Shiina Mashiro," the girl said softly, taking it as a response, her voice calm and innocent.

"Wow, so cute and innocent! Little Mashiro, Senpai likes you!" Misaki Kamiigusa rushed forward and hugged Mashiro, rubbing Mashiro's face against the girl's, an overflowing expression of affection.

"Welcome back, the food has been prepared, we just need to wait for the fresh ingredients." Sayu Ogiwara smiled and took the ingredients from Renji's hands, beginning to prepare.

Shiina Mahiru greeted Mashiro kindly, a small smile on her lips. Then her gaze fell on Renji, and her small face flushed again. She was still embarrassed about her intimacy with Renji Kamisaka that morning.

Renji Kamisaka walked closer with a smile, "I'm back, Mahiru, aren't you going to say something?"

The girl rolled her eyes and pouted at him. "Didn't Sayu already welcome you back?"

"Sayu is Sayu, you are you." Renji Kamisaka smiled and held her small hand.

The girl's body trembled violently, and she looked around her. Seeing Chihiro Sengoku's meaningful smile, she suddenly felt immensely embarrassed. She quickly pulled her hand away and glared reproachfully at Renji. "Don't mess around, today is Mashiro's welcome party! Oh, and also Ryuunosuke Akasaka's farewell party."

Renji Kamisaka didn't continue to tease the angel, but instead looked at Chihiro Sengoku in confusion. "Where is he? Where's Ryuunosuke Akasaka?"

Just as he finished speaking, Renji Kamisaka's phone lit up. A hologram, a cartoon little maid, appeared on the screen, playing with her phone, then giving Renji Kamisaka a sweet smile. "Little Miss has arrived!"

"Ryuunosuke-sama instructed me to inform you that he will not be joining dinner. The leftover hot pot food and beef for him should be wrapped in plastic and delivered to his door. There must be no spring onions, or he will add some viruses to your phone." The robotic yet polite voice continued. "Also, Ryuunosuke-sama expresses his gratitude for your care during his stay. He will be studying better programming techniques with like-minded individuals, and he will depart tomorrow morning. He has installed Sakurasou's network defense program. Contact him anytime if there are any issues." After speaking, the little maid turned into a small dot and immediately receded from the screen.

Chihiro Sengoku couldn't help but curl her lips and complain, "To think there's someone who won't put spring onions in a hot pot, what a strange and reclusive person."

Renji Kamisaka shook his head helplessly. "Perhaps geniuses always have strange habits. Our Sakurasou is also known as a gathering place for problematic students."

"That's because someone has a bad reputation!" Misaki Kamiigusa said unhappily, pouting. That "someone" was likely the playboy Jin Mitaka.

Renji Kamisaka smiled and held Misaki-senpai's small hand, then patted her head, comforting her with a smile: "Alright, don't think about unpleasant things. Today, let's start cooking this hot pot!"

"Oh yeah! You're right!" Misaki Kamiigusa was instantly touched by the gentle pat on her head and regained her energy. She began to teach Mashiro some bizarre knowledge, her eyes sparkling mischievously.

"Nee nee, little Mashiro, see this ingredient? If you bite it in one go, the juice will just squirt out, releasing delicious liquid!" Misaki explained enthusiastically. "So you have to bite it skillfully."

As she said this, Chihiro Sengoku, who was standing nearby, provided a demonstration, biting it in one go, and the juice squirted right onto Renji Kamisaka's face.

Renji Kamisaka was silent after being splattered, his eyes blinking in disbelief. "What are you all teaching Mashiro? And you, Chihiro-senpai, you did that on purpose, didn't you?"

Shiina Mahiru suppressed her laughter and took out a tissue to wipe Renji's face, a natural, thoughtful gesture. That gentle demeanor made Sayu Ogiwara unable to help but pout. Shiina Mahiru was truly cunning. She was actually leading the way in showing off her boyfriend's power.

Chihiro Sengoku looked at Renji with a satisfied gaze and teased him: "What's wrong, not confident? If you've got the ability, just spray my face!"

Renji Kamisaka: "..." What kind of tiger-wolf words were those?

Shiina Mashiro stared blankly at this scene, a complex light shining in her eyes. For her, this was the first time she had been surrounded by several gentle people at the same time, continuously being fed. Before, only Rita would be by her side and feed her. Only Rita.

While eating the beef given by Misaki Kamiigusa, she couldn't help but glance at Renji Kamisaka's palm. She felt a strange sensation in her heart. He patted Senpai's head, but didn't pat her own head, wasn't that unfair?

Renji Kamisaka was pondering the right words to educate this tiger-wolf teacher, Chihiro Sengoku, when he suddenly saw Mashiro looking at him with dissatisfaction, her innocent eyes demanding something. Though confused, he still placed a piece of hot vegetable into Mashiro's bowl. "Mashiro, you can't just eat meat, you need a balanced diet to be healthy." He turned to the others. "Misaki-senpai, Mahiru, Sayu, the same goes for all of you." The others, of course, couldn't be forgotten. Otherwise, it felt like a shura field was about to be born.

Enjoying the story? You can read 7 chapters in advance on p@treon/Rzzzy!