Battle of Changsha - while not focused primarily on romance it’s definitely there. Also bittersweet ending. Realistic/sad journey.
Weightlifting fairy Kim bok joo - rom\com
My pig lady - I’ve only watched the first 2 eps, but it starts like that at least.
Perfect couple (2014) - I’ve only seen 2 eps of this also lol. But the synopsis seems to be just what you want.
Live up to your name (2017)
Love actually (2017)
My sassy girl (2017)