The King by J. R. Ward — book slip

Long live the King... After centuries of avoiding the throne, Wrath, son of Wrath, finally takes up his father's mantle with the support of his beloved mate.

However, the crown weighs heavily as the war with the Lessening Society intensifies and the Band of Bastards poses a new threat. Wrath must make difficult choices that risk everything he holds dear.

Meanwhile, Beth Randall, his mate, desires a child, leading to unexpected tensions between them. Can their love withstand the pressures of legacy and war?

Part of the Black Dagger Brotherhood series, known for its intense romance and dark themes.