Obviously

In 2018, Nanjiang Primary School classroom. Chen Youmeng and Su Shenming are ordinary diagonal back tables. At that time, Su Shenming was strong and cheerful, and the two of them often talked and laughed. In self-study classes, we circulate cartoons to complain about plots, argue between classes about which animated character is stronger, and complain about each other's slowness after gym class... He is just an ordinary elementary school boy who loves to play and make trouble. Graduation is like turning a page of a book and the memory gradually fades away. In 2024, Provincial Experimental High School. When the class list for the sophomore year of high school listed "Chen Youmeng" and "Su Shenming" in the same table column, Chen Youmeng felt like she was struck by lightning - this was a name she had deliberately avoided for six years. When the 187cm boy sat down with an aura of alienation, the person in front of her was so unfamiliar that it suffocated her: behind the black-rimmed glasses, his eyes were indifferent, the zipper of his school uniform was tightly fastened with a cold metal rock badge, and the wired headphones isolated the outside world, leaking the roar of heavy drum beats. Mathematics is a cliff. Su Shenming was appointed by the teacher to "help" Chen Youmeng in mathematics. The 37-point test paper is like a hot soldering iron. Chen Youmeng bit her lip and stared at the derivative question, not daring to let any doubts leak out - the chatting and laughing partner back then has now become the one who is most afraid of exposing her clumsiness. Destiny pressed the unexpected play button. With a violent turn, Chen Youmeng's arm suddenly pulled off Su Shenming's headphone plug. In an instant, the deafening electric guitar riff and tearing drum beats blasted through the entire classroom - Nightwish's "Ghost Love Score"! In the astonished eyes of the whole class, Chen Youmeng blurted out almost instinctively: "I'll go, and you also listen to Night Wish?!" The next second, she bumped into his suddenly raised eyes - the ice layer inside that had been frozen for many years actually cracked a gap that was unexpected. The next day, she saw a line of rough graffiti on the edge of his open math exercise book - "Does this question look like the head teacher's bald head?" That extremely familiar tongue-in-cheek humor, that imprint of the joking boy from 2018, instantly penetrated the cold heavy metal rock shell of 2024. Function symbols are still obscure, and the distance deliberately created is still there. But when the rock band graffiti on the scratch paper began to appear next to the derivative symbols, and when a blurted out duet instantly recalled the fragments of laughter in the afternoon in elementary school, Chen Youmeng suddenly realized: the ice surface that had been isolated for six years was being quietly penetrated by something more violent than drumbeats - gravitational waves called heartbeats. Between the desks of the second year of high school, a disguised mission called "tutoring mathematics" is collapsing. Intention: Brave