I Think I Have Transmigrated Somewhere

Even though the harsh reality feels like living as a beggar, to think that the end would be death from overworking! If its going to end like this, I shouldve been in a lot of relationships, but wait, oh my... who are you in the mirror? Im a little flustered but this body its really pretty! It feels like Ive been transmigrated into a romance fantasy novel. Since Im already like this, should I enjoy the romance while Im at it? But which novel did I get transmigrated into? Ive read dozens of books where the Northern Duke and Childhood Friends exist, Ive read so many with a black-haired male lead and a blonde female lead, Ah~ I dont know!! For now, lets start by conquering the male characters! I already have a promised marriage." I volunteered for the Western Guard. We wont be able to meet for several years. What is this, is this really a romance fantasy novel? Why is everyone running away?! In the first place was I really transmigrated as the female lead? What kind of novel is this!!!!