I Swapped Fates with the Vampire Prince 2

"I died in my last life after a miserable marriage. Reborn the day before the weddings, I immediately swapped fiancés with my sister. I took the ruthless, cold-blooded Vampire Prince Robin Kane — the man my timid sister was originally supposed to marry — while she took the gentle archmage Julian. My family thought I was crazy. They were all wrong. I threw the eternal blood pact at Robin’s feet, publicly claimed him with a fierce kiss at the engagement banquet, and slapped Isabella when she tried to play the victim. Robin, the feared Vampire Prince, didn’t punish me. Instead, he protected me, trusted me, and slowly revealed a possessive, obsessive side that only I got to see. Every night he pinned me down, claiming me with raw hunger, whispering, “You’re mine, my wife. Let me hear you scream my name.” While Isabella schemed with enemies and tried to ruin me, I built my own power — The Night Fortress — turning the despised borderlands into a legendary force. I didn’t just survive this life. I took control of it."