Manga by author Eko Hatoba - Status ongoing

Princess Sumire of the Holy Hyence Empire has a secret she absolutely must keep hidden: a "polygamous marriage" with three handsome princes! What's more, if she falls in love with any one of them, the nation faces destruction!? What will become of Princess Sumire's love and strategy as she navigates these unconventional handsome princes? A tumultuous royal romantic comedy!