Hmmmmm? Lack of knowledge in world history...i hardly get about the plot(￣∇￣")

dw, all you need to know is that this is korea sometime in the 1800s-1900s? yeah. and back then korea was under japanese colonization (japan brutally colonized korea), so the people in korea at the time really hated japan and japanese people. the main character is part of a resistance group fighting against the japanese rulers and korean people loyal to the japanese. that's why the love interest is so hated: his dad is allied(?) with the japanese and is seen as a traitor to the korean freedom cause. hope this helped lol

Oh, thanks...i thought it was something simple like they just hate their ruler who is his dad(￣∇￣")