You Were Mine. (annyeongz version)
10 parts Complete two years ago, yujin gives up and wonyoung leaves.
two years later, wonyoung comes back and yujin breaks all over again.
or
ex-bandmates, yujin and wonyoung, see each other after two years to finalize their divorce.
(Originally written my jeongmoz on Ao3. All credits go to them)