I remember reading this, but I didn't finish it. I think there was only a few chapters at the time. This is what I remember.
There is a boy who is Japanese. However, he found out from a family member that he had Korean blood and he needed to move to Korea for some reason.
When he got to Korea, I think he shared a taxi with a Korean girl OR the girl came with someone to pick him up from the airport as he was staying with her family.
The both of them didn't like each other. I remember the boy complaining that Koreans are loud, and when they got out the car, I think the girl spat on him.
I might be wrong about his nationality and where he moves to. If so then swap the Korean parts with the Japanese parts.
Thanks a lot! I really want to read this again.