Julius is taken prisoner as her younger sister. She had been dressed as a man all her life, and her younger sister left a will to live normally.

Wear a pretty dress, meet a good man, have a lovely child, be happy…….

‘In other words, wear a dress, meet a man, have a baby.’

According to her sister’s instructions, she will marry into a marriage set by the enemy imperial family.Not surprisingly , the assassins come to the wedding night without a groom. 

It turns out her husband is Theo Astolf, the enemy who destroyed his country?

…well,he won’t even recognize it anyway.

“I want a woman who can survive by my side until the end.”

“I need a husband who can give me a child.”

“…what?”

“Baby , There’s no way to make it by myself. Can you help me?”

“…….”

The moment when the interests of a woman who doesn’t know what’s normal and a man who’s never been ordinary coincide . 

“…Huh, yeah! It tickles.”

“That sounds good. Can I continue ?”

“Ah ! Archduke, I, uh…….”

A romance that they didn’t even know began.