Next Best choice? (Jin X OC)

What would happened if you're twin died and you had to take his place? his life would become yours, and even his future wife would be yours to have.

Jin has gotten the call that would change his life around.
no more parties
no more one night stands.
his twin brother is gone
no one knows yet and that good because if not his family could have lost it all
now he must return to Korea a place he swear to never go back to
but when you life depends on your family empire and if you don't do as they wish you could lose it all and if you have lived your whole life as a prince that's not something easily to do but can he actually fill in his brother shoes? and could he even ever feel love for that bride that isn't his to have in the first place?