In "melodies of the high school sweetheart ," Hyunjin and Y/N find themselves seated together as table mates in their high school classroom. Despite Hyunjin's frequent absences from school due to his hectic schedule as a K-pop idol, Y/N always goes above and beyond to help him catch up on missed assignments and classwork. Whenever Hyunjin returns to school after a long absence, Y/N eagerly welcomes him back with a warm smile and a stack of notes and homework assignments. Together, they spend hours after school studying and reviewing material, turning what could have been a daunting task into a shared bonding experience. Despite the challenges of balancing school with his demanding career, Hyunjin finds solace and comfort in Y/N's unwavering support and friendship. With Y/N by his side, he feels motivated to excel academically and pursue his dreams with renewed determination. As they spend more time together, Hyunjin and Y/N's friendship blossoms into something more. Whether they're studying late into the night or exploring the city on weekends, they always find joy and laughter in each other's company, cherishing every moment they share as high school sweethearts.