Shukuteki no Ie no Toushu wo Tsuma ni Moraimashita: Tsuma wa Karen de Hakanakute Yasashikute Kashikokute Kawaikute Saikou desuNew宿敵の家の当主を妻に貰いました ～妻は可憐で儚くて優しくて賢くて可愛くて最高です～; I Married the Head of My Archenemy's Household ~My Wife Is Cute, Fragile, Kind, Smart, Adorable, and Simply the Best~; My Perfect Wife Is the Head of My Rival House

The Fors family is a prestigious lineage of swordsmen and a prominent noble house ruling the southern domain of the kingdom. Born as their third son, Nova endured a harsh childhood, branded a failure due to his utter inability to wield the exclusive power inherent to their bloodline. Even after reaching adulthood and being granted a small territory, he is burdened with virtually zero duties and zero expectations from his family and the people around him. However, an unexpected marriage proposal finds its way to Nova. The other party belongs to a great noble house that rules the northern domainthe Archgate family, which is currently at the height of its prosperity despite a long-standing feud with the Fors family. Furthermore, his prospective bride is, astonishingly, the head of the Archgate family herself, Chia... "I have been in love with you... ever since that time." Thus, the third son of the Fors family, a man who possesses nothing, finds himself welcoming a wife of excellent character and stunning beautyor rather, a wife who is simply perfect in every regard. She is a woman destined to change Nova's fate, determined to give him everything. "People say all sorts of terrible things about the head of the Archgate familythat she is terrifying, cold-blooded, and ruthless. But Chia is cute, kind, smart, and absolutely perfect." This marks the beginning of the married life between the easygoing Nova, and Chia, who reveals her true self to no one but him.