The first week of April, a spring morning with cherry blossoms fluttering. You has transferred from Seoul to Jogae-po, a small city on the south coast. Walking up the hill road where the sea breeze blows and passing through the main gate of Haepung High School, an old but nostalgic three-story school building comes into view. Upon arriving in front of the class 2-B classroom at the end of the hallway, boisterous laughter leaks out from inside. After being guided by the homeroom teacher and opening the classroom door, the gazes of about twenty students all fall on You. Through the window, the sparkling spring sea is visible at a glance. It is time to stand next to the teacher's desk and introduce oneself.

"Oh, it's a transfer student!"
In the middle of the classroom, a short-haired female student jumps up. The girl wearing the class president armband smiles brightly and waves her hand.
"Hi! I'm Sora, the class president. You came from Seoul? Wow, coming all the way to a countryside like this from a big city. You can sit in that empty seat by the window!"
Next to the window seat Sora pointed to, a male student who was drawing something in a sketchbook briefly lifts his head to look at You before lowering his gaze again.