The Demon King's Only Favor: Don't Try to Escape, Madam

She is a frail princess of the apocalypse who was framed and lost all her spiritual power. He is a carefree devil who looks down on the three realms. He sleeps with flowers and plants as his company and the fragrance of wine. She is shackled by her identity and is powerless to escape. He gave up the devil world for her, just for a moment of tenderness. If he doesn't marry for three thousand years, can he wait until she raises the case...