I Can't Handle the XL of My Knightly Husband, Whose Love and Possessiveness Are So Intense! ~The False Vixen Is Embraced Lewdly Every Night~NewAi mo Dokusenyoku mo Hageshii Kishi Danna-sama no XL o Uketome Kiremasen!: Itsuwari Dofu wa Maiyo Midara ni Dakitsukusareru; 愛も独占欲も激しい騎士旦那様のXLを受け止めきれません！～いつわり毒婦は毎夜淫らに抱き尽くされる

Lady Federica is rumored to be a "vixen" because of her voluptuous and alluring appearance. In truth, she is a pure and innocent maiden, but the gossip has left her on the verge of becoming an old maid. Just when she has nearly given up on marriage, her childhood friend Rinaldo, a knight, proposes to her. Rinaldo explains that he has caught the eye of a princess and is troubled by it, and that marrying Federica would benefit them both. Seeing it as an unexpectedly favorable arrangement, Federica steels herself for a marriage of convenience—only to discover that it will not be a sham at all, but a true husband-and-wife relationship that includes sharing a bed. With his powerful hips, heated gaze, and large body that presses the breath out of her, Rinaldo—a man with monstrous stamina—demands her fiercely every night. Federica's body simply cannot keep up with his relentless desire. This is the intensely passionate contract marriage between a doting, insatiable husband and his wife.