Yaktalhoneuro Nampyeonbuteo Bakkugetseumnida

Story

Farewell, Miss Original Female Lead. Three cycles of despair and death. At the end of each, I realized the woman who stole my husband and everything else was actually a possessor. The fourth return—now is the time to reclaim everything stolen. To do so, I needed a powerful ally. To a madwoman, a madman. “Plunder me.” Crown Prince Arpad Eastrid. I requested a marriage of plunder from him. “In return, I'll keep Your Highness from going mad.” An offer he absolutely couldn't refuse. I stared straight at him, wearing a triumphant smile.

Synopsis via AniList (English).