"Everyone, pay attention! Today marks the first day after receiving your results, and congratulations on being successful students," the PTI teacher announced enthusiastically.

"Yeah!" The class erupted in cheers.

"As today is your first day as seniors in this school, be the inspiration for your juniors. Help them out with problems and also study hard because this year will determine what you'll become in the future. So, stay focused," the teacher continued.

"Yeah!" The cheers echoed once again.

"I'll take my leave now, and your homeroom teacher will introduce herself to you. Be good to her and follow her instructions, okay?"

"Yeah!" The class cheered and clapped as the PTI teacher left the room.

After the PTI teacher left, the homeroom teacher entered, and everyone stood up to greet her.

"Hello, students. I am your homeroom teacher, Bae Rayun. Let's study hard and become inspirations for those looking up to us as seniors. Also, we have a new student joining us today. Please welcome her..."

Kim Yujin entered the room, tall and gorgeous with her slim figure, long hair, fair skin, honey-brown eyes, and a bright smile that captivated everyone's attention.

"Ohhhh!" The class cheered as she walked in.

"Please introduce yourself," the teacher prompted.

"Hello! My name is Kim Yujin. I am a transferred student from Genius High School. I hope to meet new people and make lots of friends here. Thank you," Yujin spoke in a soft and polite tone, leaving everyone impressed with her beauty and grace.

"Alright, does anyone have any questions for Yujin as she is now your new classmate?" the teacher asked, scanning the students' faces.

"I think you don't have any... Yujin, you can sit next to Jayyun over there."

As Yujin walked towards Jayyun, he didn't even acknowledge her presence.

"Hello," Yujin greeted, but Jayyun didn't respond.

"If this seat isn't comfortable for you, you can choose another one with Sora," the teacher suggested.

"I would like to sit with Sora," Yujin decided.

"Alright, do as you please," the teacher said, starting the class.

As the class progressed, everyone focused on studying, except Sora, who seemed bothered by Yujin's presence. Yujin noticed Sora being hit with rubbers from the girl sitting behind her but chose not to intervene directly.

After class, Minsoo, a girl who had been observing Yujin, approached her desk.

"Yujinah... I am Minsoo, Lee Minsoo. Let's be friends?" Minsoo offered her hand.

Yujin, sensing Minsoo's two-faced nature but maintaining her composure, shook her hand and smiled politely.

"Hey Sora, stand up and go buy us some bread, and also get something for your desk mate as she's new here," Minsoo ordered.

"There's no need; I can buy it myself, and I also want to take a school tour," Yujin declined politely.

"Yujin, since you're my friend now, I'll help you with everything. You don't have to sit with this girl; you can take Rami's seat and sit there. You'll be comfortable around me," Minsoo insisted.

"Thank you, but I've chosen my seat for today, and I won't change it until the end of the month as per the school's rules," Yujin asserted.

"Wow, you're a stickler for rules, huh?" Minsoo chuckled.

"As you said, you left your old school. Why?" Yujin inquired.

"There's no specific reason; I just wanted a change. There were many bullies, and I didn't like it," Minsoo explained.

"Oh, haha," they laughed as they exchanged high fives, a hint of mischief in their eyes.

"I'll add you to our group, okay? Give me your contact," Minsoo suggested.

"Sure," Yujin agreed, and Minsoo added her to the group.

In the next class, there were many messages in the group about Sora being bullied, not just by Minsoo but also by other classmates. 

After school, as Yujin was leaving, a girl approached her.

"Hey, I'm Jayun, Jayyun's twin sister..."

"Oh, nice to meet you," Yujin replied, feeling both shocked and surprised.

"Yeah, I know my brother didn't greet you back; he's always been like that, never changed ever... so don't mind him," Jayun explained.

"Oh well, I'm not bothered by that," Yujin shrugged.

"Ahaha, you're such a lighthearted person, I never knew that," Jayun chuckled.

"It was your first day; hope you enjoy it here. I'll leave first as I have to go somewhere," Jayun said, excusing herself.

"Sure," Yujin replied, following Jayun out of the classroom. Minsoo wasn't there as she had left before the class ended. As they reached the door, Jayun turned towards an alley, which seemed suspicious. Yujin decided to follow her to see what was going on.

In the alley, Yujin saw Minsoo and her friends surrounding Jayun.

"Jayun, you little stick figure, hahaha!" Minsoo's friends laughed, but Jayun didn't seem okay.

"I brought you what you wanted," Jayun said nervously.

"Oh, really? Give it to me," one of Minsoo's friends demanded.

The narrative has been taken without authorization; if you see it on Amazon, report the incident.

"But promise me you won't bother me after this..." Jayun pleaded.

"Yeah, are you ordering us around? Do you think you can tell us what to do, you lowly thing?" another girl named Seoyeol shouted.

Wonra grabbed Jayun by her ponytail and hit her in the face. Her screams echoed, and they emptied her bag, finding a piece of paper. As Wonra read it, her anger grew, and she hit Jayun again, this time in the stomach, causing Jayun to cry out in pain.

"Yeah, Jayun, tell your brother to date me, or I'll kill you both, alright?" Wonra threatened.

Jayun nodded in fear as they left from the other side of the alley. Yujin, witnessing everything, stayed until they were gone. She approached Jayun, who was picking up her belongings and looked visibly distressed.

"Yujin... what are you doing here?" Jayun asked, startled.

Instead of answering, Yujin hugged her and then helped her pack her things. She walked Jayun home as well.

On their way back, Jayun opened up to Yujin. She explained that Minsoo's friend liked her brother but he rejected her. Now, she was being pressured to convince her brother to date Minsoo's friend. Jayun never told her brother about the bullying as he was already working hard to make ends meet and didn't pay much attention to what was happening around him.

Yujin listened empathetically, understanding the gravity of the situation Jayun was in.

After leaving Jayun at her home, Yujin continued on her way. Along the path, she crossed paths with her brother, Jayyun. He glanced at her, paused for a moment, and then walked away without saying a word. Yujin watched him until he disappeared into their house, then turned and headed towards the bus station to catch her bus back to the hostel.

While sitting on the bus, Yujin's mind raced with thoughts about everything that had happened. She replayed the events over and over in her head, feeling overwhelmed by the weight of her worries.

---------------------------------------------------------------------------------------------------------------

Jayyun's perspective:

As Jayyun entered the house, he could hear his sister's sobs echoing through the rooms. Unable to bear it any longer, he headed straight to her room. Jayun was sitting beside her bed on the ground, trying to hide her tears as Jayyun opened the door.

"Jayun..." Jayyun's voice softened as he saw his sister's distress.

Jayun looked up, startled, attempting to conceal her tears.

"It's okay, sis," Jayyun said gently, kneeling down beside her. "You don't have to hide your feelings from me."

Jayun leaned into her brother's comforting embrace, letting out all the pent-up emotions she had been holding back. Jayyun stayed with her, offering silent support as she poured out her heart, knowing that despite the challenges they faced, they would always have each other's backs.

After leaving Jayun at her home, Yujin continued on her way. Along the path, she crossed paths with her brother, Jayyun. He glanced at her, paused for a moment, and then walked away without saying a word. Yujin watched him until he disappeared into their house, then turned and headed towards the bus station to catch her bus back to the hostel.

While sitting on the bus, Yujin's mind raced with thoughts about everything that had happened. She replayed the events over and over in her head, feeling overwhelmed by the weight of her worries.

Jayyun's perspective:

As Jayyun entered the house, he could hear his sister's sobs echoing through the rooms. Unable to bear it any longer, he headed straight to her room. Jayun was sitting beside her bed on the ground, trying to hide her tears as Jayyun opened the door.

"Jayun..." Jayyun's voice softened as he saw his sister's distress.

"Jayyun, do you need anything?" Jayun asked him.

He just stood there and then came closer to her and hugged her.

"I am sorry... I am really sorry," Jayyun's eyes filled with tears as he saw his sister suffering because of him.

"When did you...?" Jayun was surprised by his apology.she was being bullied in school, but how did he find out?

"I saw you writing responses on my behalf... those papers... that you threw in the dustbin, I read them all. Even after finding out, I wanted you to tell me, but you never came and said anything... why? Why were you bearing all this alone...?" Jayyun said in a soft and sad tone as he sat right next to her on the ground.

"I am sorry... I broke the promise... but it's just for this year. I'll be fine, and it's not too much. I can do this... they won't bother me like that again. I gave them the last response today..." Jayun explained.

"And what did they say?" Jayyun inquired.

"They said they won't bother me again," Jayun lied.

"I believe you. I believe it's true, and you have to tell me everything, even if it's a small thing, okay? I know you are strong and can handle anything, no matter how hard it is, but I want you to rely on me. Give me a chance to prove myself that I can protect you," Jayyun reassured her.

"I know you can. You are already doing enough. I want to see you happy as well – smiling, laughing, talking to others, and not just minding your own business," Jayun expressed her concerns.

"I know, but I can't do it. I don't know, it's just uncomfortable to be around so many people," Jayyun confessed.

"I know... let's end this here, and I am so hungry... I am starving. Let's go eat something," Jayun suggested.

"Hmm, okay," Jayun agreed, hugging her again.

"Hey, don't need to be this emotional. I know you are always here to protect me, my big brother," Jayun said.

"But still, you act like you are older than me," Jayyun teased.

"Yes, because you are just one minute older, and that doesn't matter, does it?" Jayun teased back.

"Yes, it does. I am still older than you..." Jayyun argued playfully.

"Oh, really?" Jayun challenged, starting to tickle his neck, and he laughed, trying to stop her.

"Enough now... go and wash up. You smell like a rotten fish. I'll set the table," Jayun joked as she left the room.

"Hey, you can't insult me like that. I don't smell like a rotten fish," Jayyun retorted jokingly, then realized that he did have an unusual smell and decided to freshen up.

Yujin's perspective:

In the morning, as she was getting ready for school, Yujin received a message from Minsoo asking her to meet in the alley before school.

She was confused about whether to go or not but then agreed to meet her. When she reached there, Minsoo wasn't alone but with a group of girls and boys. Some of them were smoking.

"Yujinah... you are here," Minsoo greeted her.

"Hey, but why did you call me here?" Yujin asked, feeling uncomfortable in the situation.

"It's nothing. We wanted to go to school together, and these are just my friends. They come here to smoke. These two are also in the same grade but a different class. I'll introduce you to them," Minsoo explained and introduced her friends.

When she reached the one who was smoking, Yujin coughed.

"Oh, so she is a daddy's girl, ahaha. Can't even bear the smell of cigarette. How is she going to survive with us?" one of Minsoo's friends mocked, and everyone laughed.

"Oyyy, Taeyeon... she is a nice girl, not a b**** like you are, so don't mock her, or I'll break your teeth," Minsoo threatened him, and he made an unpleasant face.

"I am leaving then. You are already done with the introduction, and it's not fun," he said as he left. On his way out, he touched Yujin's skirt and her thigh a little. Everyone just smirked and smiled, ignoring his inappropriate behavior.

Yujin left the place with Minsoo and went back to class. Today, Sora was absent because she was involved in a road accident. Yujin felt stressed the whole day because of what happened earlier in the alley.

Here's the continuation of your story with corrected grammar and punctuation:

When classes were over, Yujin went to Jayun's desk.

"Hey," Yujin greeted.

"Hey... Yujin, how are you?" Jayun responded with a bright smile on her face, resembling sunshine.

"I am good, and... how about you?" Yujin asked, her tone filled with concern.

"I am always great," Jayun replied again, with the same bright smile and an excited tone.

"Can I get your contact?" Yujin asked Jayun.

Jayun looked surprised. "Oh, I just want us to be friends," Yujin clarified, smiling.

"Sure," Jayun gave her contact information, and Yujin returned to her seat. Minsoo was absent from class as usual; she had skipped again. As Yujin sat, she turned, and her eyes met Jayyun's gaze. She could feel someone staring at her, and when their eyes met, Jayyun looked down immediately.

After classes, Yujin returned to her hostel. Soon after, she received a message from Jayun.

"Hey, it's Jayun."

"Oh, I know..." Yujin replied.

"Are you studying?" Jayun asked.

"No, I'm just thinking about something," Yujin responded.

"What? I might be able to help you with it," Jayun offered.

"Yes, you can," Yujin agreed.

"Oh, really?"

"I want to know about Minsoo and her friends, and also about the girls Sora and Rami."

"Oh, so we can meet?"

"Hmm, okay. Where?"

"I'm alone at home, so I think you can join me."

"Alright, I'll be there in just a few minutes."

"Okay, I'll wait for you."

Yujin soon arrived at Jayun's home. They sat in her room, and Yujin began asking about Minsoo and her friends.