To My Rude Darling with Multiple Personalities (Novel)

Monica hates her last name, a constant reminder: Orphen. But she went on to make something of herself as a field nurse during the war. Now, trying to start a new life, she is nearly thwarted by Riella, a peer from the orphanage. But hers isn't the only familiar face in Monica's new city. There's another. Then another. And one more! These blue-eyed men have hugely different personalities, but the same exact scars. Could they actually be someone Monica knew once, by a different name?