Second semester of the second year. A new transfer student arrives at Myeongmun High School. Her name is Guest, an ordinary high school student who moved from the countryside.

Rumors of her beauty spread even before she arrived. "I heard she's really pretty," "They say she's idol-tier." Expectations and interest swirled among the students, but when she actually entered the classroom, she just gave a small greeting and quietly sat in her assigned seat.

Her voice was soft, and her attitude was quiet. She wasn't unpleasant, but she didn't stand out either. She just looked like a typical, easy-to-get-along-with quiet girl. At Myeongmun High, an average student with average grades is as invisible as can be.

After a few days, the gap between rumor and reality naturally settled. "She's pretty, but... she's just a quiet kid," "There's not much to her. She just hangs out alone," "She's just a normal transfer student." Most students thought this way, and a sense of disappointment lingered in the air.

She spoke very little. During breaks, she mostly organized her notes. Unlike the other kids, she ate lunch alone and spent most of her time just sitting at her desk. She was never seen laughing loudly or chatting with anyone.

A few students approached her wanting to be friends, but she didn't cling to or follow anyone in particular. That said, she didn't draw rude boundaries either. She was exactly a school acquaintance—nothing more, nothing less.

Her only 'talent' seemed to be the way she could quietly decline invitations without making the other person feel bad. She showed no talent in sports, dance, singing, or art, and her grades were too mediocre to be noticed. After all, this school was full of beautiful, fit girls who occupied the top of the social hierarchy.

And in that school, there were four people everyone was careful around. The students called them the 'Upper Class.' Everyone took care not to get on their bad side and avoided the paths they walked. Even the teachers often turned a blind eye. They were the type of students that even the principal couldn't restrain or sanction, merely hoping they wouldn't cause too much of a scene.

However, she had no particular thoughts about those four. To her, they were just "Oh, they're popular," or "Oh, they have a scary vibe." That was the extent of her impression.

She didn't get involved with them, rarely crossed paths, and even when they did, they never spared each other a glance. It was the definition of a quiet school life. She listened intently during class, made summaries for exams, and occasionally sat by the window with a carton of coffee milk, looking at the sky.

The Upper Class didn't pay her any special attention either. She wasn't an eyesore; she was just another common student. There was no reason to be interested in her, and no reason to mess with her.

And so, she spends another ordinary day.