Crossover: I Took In a Runaway High School Girl

As night fell, the atmosphere in Sakurasou felt warmer than usual. As was tradition, the dorm held a welcoming ceremony for new residents, an event always met with lively anticipation. This time, the main course was a steaming hotpot of lamb, fragrant steam curling upwards. Interestingly, it was a double-flavored hotpot, where everyone could choose their favorite soup base for boiling the lamb and various fresh vegetables.

This time, there were three beautiful new residents: Mai Sakurajima, Frieren, and Fern. A delightful oddity, after Mai Sakurajima moved into Sakurasou, her disappearing symptoms seemed to have ended. Everyone in Sakurasou could now see her, talk to her, and interact normally, as if the curse had never existed. Fern stared at Mai Sakurajima for a few seconds, her brows furrowed in deep thought, trying to comprehend this phenomenon.

Before savoring the tempting hotpot, self-introductions were essential, especially for newcomers. Frieren, Fern, and Mai Sakurajima briefly introduced themselves. Of course, to conceal their true identities, Fern and Frieren both stated they were distant relatives of Renji Kamisaka, coming to stay temporarily. They also didn't mention being mages, keeping that secret tightly guarded.

Renji Kamisaka took front-facing photos of Frieren and Fern, ensuring their faces were clear. He sent them to Yukinoshita Haruno on his phone, asking her to help him obtain official identification for the two girls. Yukinoshita Haruno didn't ask many questions, simply responding that she would bring them tomorrow. Haruno-onee-san's efficiency was, of course, beyond doubt, Renji just needed to wait. Since the Yukinoshita family intended to marry their daughter to him and bring him into the Yukinoshita family's fold, they certainly wouldn't mind helping him a little, especially with something like this.

As for Frieren's pointed elf ears, she covered them with illusion magic. This way, no one would notice her unique ears, which were different from ordinary humans. But this would waste her magic power. So she immediately dispelled the magic when she returned to her room. Before finding a way to return to her original world, it was better to conserve her magic power.

After a delicious dinner filled with laughter, everyone returned to their respective rooms.

Shiina Mahiru pouted, a little jealous. Three beautiful girls suddenly came to live in Sakurasou, and she was surely under a lot of pressure, especially given her closeness to Renji. Moreover, Miss Frieren and Miss Fern had suddenly appeared and were his distant relatives, making her feel consistently odd.

While Mahiru was still contemplating these things in her room, Renji Kamisaka's voice came from outside the door.

"Mahiru, are you asleep?"

"Not yet."

"May I come in?"

"Of course."

With a flushed face, Shiina Mahiru opened the room door and let Renji in.

"Hi!" As soon as he entered and closed the door, Renji immediately swept Mahiru into his arms, lifting her lightly. He settled her onto the bed, holding her close.

"Mahiru, did you miss me?" Renji gazed at the beautiful angel in his embrace with burning eyes, and his tone was incredibly gentle, almost a whisper.

Shiina Mahiru's body trembled, and she couldn't help but raise her hands and gently wrap them around Renji's neck. "Just a little," she replied softly, hiding her embarrassment.

"How little is 'a little'?" Renji teased, a mischievous smile on his lips.

"That much." She leaned in and kissed Renji's cheek. After all, they were in that kind of relationship, and this kind of intimacy was natural. Of course, it was normal.

Renji Kamisaka smiled faintly and hugged the angel tightly, savoring their shared moment. "I know you have questions to ask me, ask them now." He gently stroked Mahiru's back. "I won't lie to you."

Hearing this, Shiina Mahiru felt a warmth in her heart. Renji's trust in her was so clear. "Then I ask, what happened to senior sister Mai Sakurajima?"

Renji Kamisaka didn't hide it either. Although he didn't want Mahiru to worry and didn't want her to get involved in mysterious things, honesty was the best policy. As a girl by his side and as his woman, Mahiru had the right to know the truth. To avoid wasting words, a certain existence made him mention it briefly. He told her about Mai Sakurajima's slow disappearance.

After listening, Mahiru covered her mouth in surprise, her eyes wide. "Is there such a thing?" She looked at Renji, confusion still lingering. "Since others won't see that senior sister and will gradually forget her, what about you?" Her tone was full of curiosity and a hint of demand. "Tell me the truth, why weren't you affected at all? After all, when the senior sister came to Sakurasou, we could also see her." Mahiru puffed out her cheeks. "If you're not honest, I'd definitely think I'm dreaming or you're telling me a supernatural story to scare me."

Renji Kamisaka lowered his head and kissed Mahiru's small mouth. The Angel's little mouth. Fragrant. Soft. I'll never get tired of kissing it, no matter how many times, he thought.

"How could I bear to scare you?" Renji whispered after the kiss, his tone gentle. "Everything I said is true. I didn't intend to tell you these things, but think carefully. If you know, you'll feel more confident when facing supernatural occurrences in the future." He looked into Mahiru's eyes, reassuring her. "As for why I could help Senior Mai, perhaps it's because I'm special." Renji smiled faintly. "So, if you encounter evil spirits in the future, don't be afraid. I'm here."

Shiina Mahiru felt sweetness in her heart, a warm feeling enveloping her. Was this the feeling of being protected and loved by someone? It felt amazing.

"Let's put the Senior Mai issue aside for now. I'm sure you can handle it. Then what about your two distant relatives?" Mahiru asked, a little teasingly.

"They jumped out of the Treasure Chest in my room." Renji replied casually, as if it were the most normal thing in the world. "My Treasure Chest was inherited from my ancestors. You can put items in it three times a day and exchange them for three other magical items." He whispered. "Miss Frieren is an elf, and Fern is her apprentice. Both are mages." Renji looked into Mahiru's eyes. "If there's anything that can't be resolved in the future, you can ask them to take care of our security work. Consider it like paying rent."

"Elf? Mage? Sure enough, I'm dreaming." Shiina Mahiru looked like she was about to faint, her head spinning with all this new information.

Renji Kamisaka smiled wickedly, pulling Mahiru closer. "Don't worry whether it's a dream or not. Anyway, I've told you everything, Mahiru... please stay with me."

"Hehe, now that I know your secret, you won't be able to leave me even if you want to!" Mahiru looked at him with feigned resentment, but her eyes were full of tenderness and affection.

Being so cute, the girl looked at him with an ambiguous gaze that was about to be withdrawn, and Renji Kamisaka's heart trembled. His breathing quickened.

"Mahiru, tonight, I don't want you to sleep."

"No, I just couldn't gather my energy to listen to class today, you... don't go overboard." Mahiru pushed him gently. "You take care of it for a bit, go to Sayu or the senior."

"But I missed you so much today." Renji whined, hugging her tighter.

"I can't even think about it... Do you want my grades to drop?" Shiina Mahiru blushed and glared sharply at him. Although she also wanted to stay up late tonight and continue being sweet to him, she really didn't want to force herself to listen to class tomorrow. This attitude and state of study were too poor.

"Alright, Mahiru, I'll listen to you." Renji Kamisaka could only give in. Although he could force her, Mahiru would also be happy. But he couldn't forget Sayu and the senior.

So, after a while, he came to Sayu Ogiwara's room, and brought Sayu to Misaki Kamiigusa's room on the third floor. It had been a long time since he had a two-person show, so he decided to try it. And, he didn't know if it was because Miss Frieren... smelled too fragrant. He was a bit too excited today.

Then, the next morning.

Renji Kamisaka was stared at intensely by Mai Sakurajima. She had been disturbed yesterday. Renji Kamisaka ignored her rolling eyes and only asked curiously, "Are you going to school today? If you leave Sakurasou, your situation might recur."

"Hm, of course I'm going!" Mai replied firmly. It was fine to pretend to be a non-existent person and listen to class. Better than doing nothing. Mai Sakurajima didn't want to waste time. And she couldn't just do housework here like Sayu Ogiwara.

Sayu Ogiwara had already made breakfast. Today there were steamed buns, soy milk, and fried dough sticks. This was what Renji Kamisaka had taught her.

Misaki Kamiigusa was always in a hurry. She grabbed some steamed buns and rushed out of Sakurasou with full energy, as cheerful as ever. She was clearly given a good lesson by Renji Kamisaka last night, but she acted as if nothing had happened. Renji Kamisaka decided to work harder tomorrow night. Try to make the senior sister unable to get out of bed. Okay, just kidding. He wasn't that rough with girls. It was out of pity that Misaki Kamiigusa became so cheerful.

Chihiro Sengoku surprisingly didn't drink beer last night, but the look she gave Renji Kamisaka was a little unfriendly. More and more beautiful girls were staying here. If I catch him marrying later, I feel like there will be a lot of resistance! I don't think it's enough to just bring the girl, Koharu Shirayama. How about also inviting her expert friend who failed at blind dates, Shizuka Hiratsuka? Chihiro thought slyly. Renji Kamisaka, of course, had no idea of Chihiro Sengoku's idea of bringing two girlfriends for free.

Miss Fern glared at Renji again. Seeing the dark circles under her eyes, it seemed she hadn't slept well. Renji Kamisaka felt that in Miss Fern's eyes, he was probably a "sex maniac." However, he didn't want to pretend to be a saint. He was indeed like this, so why pretend?

Frieren acted as if nothing had happened. She greeted with a smile and ate the delicious bun with a joyful expression. Frieren was always lazy. As an elf, her lifespan was long. She had lived too long and didn't know much about humans. Her personality was so relaxed. You could say she was too lazy to think, or you could say she didn't want to think. Because human life was too short. After getting to know humans and when they died of old age, Frieren, as a long-lived elf, would be sad. So she could only try not to understand, so that she wouldn't feel sad about the loss later. Her loved ones had died, but she, as a long-lived elf, had to keep this longing and sadness and continue to live.

"Good morning, Miss Frieren and Miss Fern." Renji Kamisaka still greeted politely.

"Good morning, Renji Kamisaka." Frieren responded calmly, taking a bite of her bun.

Fern snorted coldly, "Mr. Frieren, please be careful with this man! He is very dangerous to women." She glared at Renji. Two in one night! She couldn't sleep because of the noise. Thinking of this, she felt a little depressed, "Mr. Frieren, didn't you hear any noise last night?"

Frieren's cheeks also flushed, but she waved her hand indifferently, "I used soundproofing magic on myself. Alright, Fern, you don't need to care. It can be seen that Renji Kamisaka is in good health."

Renji Kamisaka's face flushed. Teased by an inexperienced elf, how should he respond?

"Lord Frieren, why didn't you give me soundproofing magic too?" Fern's face was full of resentment and exhaustion.

Renji Kamisaka raised his hand weakly. "Well, actually, the soundproofing effect of the flowers is still good."

Frieren waved her hand indifferently. "We are special and sensitive to sound. It's not your fault. On the contrary, we are very grateful to Renji Kamisaka for taking us in." Miss Frieren was still thoughtful and sensible.

Renji Kamisaka spoke to Frieren under Fern's watchful gaze. "Come to my room, Miss Frieren. There's something I want to tell you."

"Oh." Frieren nodded obediently and followed Renji.

Fern puffed out her cheeks, thinking that Lady Frieren's purity would be threatened, so she hurried after them.

However, Renji Kamisaka had no intention of attacking the simple Frieren, at least not for now. She was a powerful elf mage, who once led a brave team to kill the demon lord. So, if you wanted to force Frieren or use dirty tricks, wouldn't that be equivalent to seeking death? So he planned to impress the elf lady with his sincerity.

He turned on the computer. He explained the pinyin and 26 letters to Frieren and Fern, the basics of modern language. Both were genius mages, and it was easy for them to memorize some pinyin and grammar. It didn't take long to master it. So Renji Kamisaka handed the computer to them and let them search for information and understand the world themselves.

When Renji Kamisaka left the room and went to call Mahiru.

Fern lowered her head with a guilty expression. "I'm sorry, Miss Frieren. It seems I misunderstood Mr. Renji Kamisaka."

Frieren smiled and touched her head. "Don't worry, he won't blame you." She smiled gently. "And you were thinking about me, weren't you? But he doesn't seem like a bad person, he's very gentle." Frieren pondered. "Alright, just apologize to him when the time comes, let's learn about this world together!" She stared at the computer screen with sparkling eyes. "I'm very curious, people in this world, even though they don't learn magic, can use technology to create all kinds of practical props." Frieren sighed in admiration. "This is just another kind of magic!"