No One's POV

                In a clear and bright morning, a cheerful humming was heard. It was from a girl in uniform, walking and singing happily on the pavement. She was carrying a yellow backpack with a cute picture of a bear that is famous as "Winnie the Pooh" on it. Please do not mistake her as an elementary student because in fact, she is a Senior High School student. She happily greeted an old man who was watering flower in front of a house

"Good morning Mr.Park!" she greeted while smiling. The old man who was called 'Mr.Park' smiled back and said

"Good morning Han Aerin!" he greeted back. Aerin -the girl's name- then continued to walk until she reached her destination, Kyungho High School. It was still empty since it was 6,30 am and school starts in 7.15 am. She entered her classroom with a smile and greeted her classmate

"Im Minseul annyeong!" she greeted a girl who was reading a comic book peacefully

"Stop smiling so wide, Han Aerin. It is irritating me!" she replied her with an insult but Aerin just shrugged it and said

"You are jealous with my charming smile, aren't you?" she replied while smiling even wider. Minseul rolled her eyes and went back to her comic world. Aerin walked to her seat in the back of the class and put her bag on the chair near the wall while she sat on the another seat. Everyone in the class has a seatmate but her. She was alone, not because nobody wants to sit with her but nobody wants to sit on the back. She pulled her phone out of her pocket and started to play a game. The class started to get crowded as time passed by. The students were mainly busy in their own activities, playing with their phones, chatting with their friends or lovers, sleeping, and many more. Their activities were stopped when the bell rang

Ding Daeng Dong Daeng~

Aerin's POV

All the students went back to their own seats and sat neatly while waiting for their teacher to enter the class. I put my phone back in my bag and sat neatly like the other students. Then, our homeroom teacher, Mrs.Song entered their class with an unfamiliar looking student

"Good morning class," she greeted

"Good morning, Ma'am!" the whole class including me replied

"We have a newcomer here, Mr.Kim, please