Mitsubaku: Zettai Kunshu no Amai Yubisaki

"I want to show you just how lewd and beautiful you are." Princess Noelia, whose country has been destroyed and who has lost all hope in life, becomes a prisoner of Ernst, the handsome king of a great nation. He tells her that he'll be taking her as his queen so she can give birth to his heir, but... "I'll give you so much pleasure that you won't be able to think about wanting to die." As he lasciviously embraces her every night, caresses her, and teaches her the joys of pleasure, Noelia's body and soul become addicted to Ernst. She wants to protect and cherish him. Noelia cannot stop her heart from being drawn to Ernst, but she is deeply shaken by the words of her vassals, who wish for her country's revival... Source: BisouBisou Comics