Karlnap fluff set in an au were the fighting as stoped from all sides

A world filled with mystical and magical creatures. Where humans are the uncommon and the hybrids are plentiful. In this world, The Spring Family's son is forced into a arrange marriage to gain peace, money and power without knowledge of it. When he finds out, he becomes outraged due to being in love with someone else entirely, A doctor from the poor town of Rosendale who's wealth is little but kindness is plentiful. How will this tale possibly turn out? If you like this point of view, check out: @Cats_Got_Class