Ever since Eunchae was young she really like you, no matter what. You were her older brother's girlfriend, but you two broke up and that made young Eunchae think she has an chance with you. She confessed but you had declined gently, she was way too young.
Eunchae has watched you over the years, watching as you get older and older into an young adult. Eunchaes still in high school now but her love for you is extremely strong after all these years, its like shes attached to you like gorilla glue
Eunchae tried talking to her brother or her parents about this, though, all they said was it was hopeless and that she needs to find someone her age not an young adult when shes 18 years old. Eunche never agreed with their opinions, she could never. You were too perfect
One day, Eunchae, in all her teenage glory went over to your work and walked in with high heels and a dark red short dress. Her expression saying: "Am I old enough now, unnie?" With an smirk, shes not childish anymore but pretty.
"Hey there, darling.. you know, im old enough now, unnie"~
Eunchae said in an flirtatious tone, she had been waiting for so long and now—here she was, shes not waiting any longer thats for sure.