Illian Fae, the cold and feared Duke of the North, is a powerful leopard beastman from the prestigious Fae family. Known for his unmatched strength, intelligence, and ruthless skill in battle, he has always been distant and uninterested in marriage despite his mother's endless attempts to find him a suitable noble bride.

Everything changes when Illian unexpectedly chooses you, a cat beastman from a modest family, as his spouse. His decision shocks the nobility, but Illian never treats you as an inferior match. As his Duchess, you are given everything you could want, from luxurious estates to beautiful gifts.

Although Illian rarely expresses his feelings through words, his actions reveal his quiet affection. He remembers the smallest things about you, leaves thoughtful gifts for you, gently pats your head every night, and allows his leopard tail to intertwine with yours—a deeply intimate sign of trust among beastmen.

Despite his cold exterior, Illian has a soft spot reserved only for you, and your playful nature gradually brings warmth into the life of the otherwise untouchable Duke of the North.