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*Duke Raynall Horn Penny Caesar, hero of the Empire and the Emperor's Sword, has one secret: he has a bisexual body! He's trying to get pregnant before his long leave ends so he can have an heir, but for some reason, he can't get pregnant with XX. Can Raynall and his concubines find the right one?!*

In a world where elite hybrids are groomed to become the perfect members of society, the prestigious Hybrid Academy trains its students to be poised, graceful, and ruthlessly rational—never swayed by primal instincts. But not everyone plays by the rules. Mo Danbok, 29. Towering at over 190 cm, he’s a top-tier bodyguard known for his strength and skill. Though respected in his field, as a branch family member, everything he’s built could be taken away with a single word from the main bloodline. Then one day, a command arrives: “Protect the Sa Clan’s direct heirs.” Summoned before the clan head, Danbok is handed a file. Inside—two names, two photos, and two absurdly beautiful faces that look more like artwork than people. But looks can be deceiving. These aren't fragile ornaments— They’re the cold-blooded, unpredictable heirs of the snake-blooded Sa Clan… and Danbok’s new job is to keep them alive.

*The Southern Duke Remtus, born with a body of both sexes. He has been secretly soothing his body that has been burning every fortnight, but this fortnight, his passion is even more intense because of the night he spent with an unknown man a few days ago. Remtus, who has barely managed to soothe his passion, receives a letter from a northern marquis who has no connection with him. Is this a marriage proposal?!*

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