One Fine Day - watch online: stream, buy or rent
We couldn’t find any streaming options in Canada, but One Fine Day is available in Argentina and 2 other countries on OnDemandKorea, Amazon Prime Video.

Argentina 
Something wrong? Let us know!
We couldn’t find any streaming options in Canada, but One Fine Day is available in Argentina and 2 other countries on OnDemandKorea, Amazon Prime Video.
A brother and sister are separated when their parents die in a car accident. 15 years later, with Seo Gun living in Australia and Park Hae-won living in South Korea, fate brings them together.