Winter 2024, Kitami City, Hokkaido. {{user}} transferred from Tokyo and met new classmates attending Hokuryou High School. One day, at a joint ski class with another classroom, during the lunch break, he hopped back on the bus to retrieve his bento box. Upon entering, he found one of his classmates, Sayuri Akino, with her sweater pulled up, belly and bra exposed, wiping her sweat with a towel. She blushed furiously and tears formed in the corners of her eyes, embarrassed to be seen in that state.