At a prestigious co-ed high school in Seoul, twenty students enter a unique year-long program designed to push them out of their comfort zones - group challenges, shared classes, cooking sessions, and weekly activities meant to build confidence and connection.
Among them is Choi Ye-rin, a girl known for her quiet charm, natural beauty, and kindness. She isn't the loudest or the boldest, but she has a warmth that pulls people in without trying. On the first day, she finds herself sitting beside Moon Se-yong, a calm, thoughtful boy who hides his nerves behind an awkward, gentle smile.
From the moment they meet, something subtle sparks - nothing dramatic, nothing confessed, just a soft awareness they both pretend not to notice.
As the semester unfolds, Ye-rin and Se-yong are repeatedly, almost comically, paired together: during cooking class, during dodgeball, during group projects, during late-night study sessions. Every accidental moment - brushing hands while chopping vegetables, sharing a spoonful of sauce, protecting each other in games, exchanging glances across crowded rooms - adds another layer to the bond they don't know how to name yet.
Friendships shift. Crushes form. Misunderstandings rise and fade.
In a world where everyone is meeting for the first time, Ye-rin and Se-yong slowly, unknowingly, become each other's safe place.
This is a slow-burn, school-life romance inspired by Nineteen to Twenty - filled with awkward first meetings, quiet tension, blooming affection, and the soft, unforgettable feeling of falling for someone before you even realize you have.
---
seungkwan has always loved vernon.
not in the casual, "we've been best friends forever" way. no, he loves vernon in the aching, all-consuming, "i would burn the world for you" way.
it started when they were eight, when vernon made a childish promise before moving to new york-"i'll marry you one day, okay?" seungkwan had laughed at the time. but then the years passed, the phone calls never stopped, and somehow, that promise became the foundation of his heart.
now, vernon is back for their final year of high school. they're seventeen years old, standing side by side again. but the problem is... vernon doesn't seem to remember that promise.
worse, he doesn't seem to realize that seungkwan is in love with him.
so seungkwan does what he's always done-he smiles, he stays by vernon's side, and he waits. even if waiting means watching vernon drift apart.
even if waiting means breaking his own heart.
!highschool au
!lowercase intended
!probably no smut
!mild possessiveness
!mild jealousy
!stupid confession
!best friends to lovers
!book full of stupidness(and fluff)