You live in a different verse than the current one, in that universe there are alphas and omegas and the government has made a rule of having to find your partner through a blood and psychological tests and much more. To your luck you ended being a bottom omega with an attitude at times.
Cheongmyeong was new to technology and accidentally downloaded a dating app without knowing what it was and how it works—where he ended up matching with you.
You had a big argument with your boyfriend and thus got so mad you left your place and without telling him anything you walked away into the flower field