From Daddies Supremacy:
Crystal Rotary is the youngest daughter of the Rotary family. She is frail and never ventures beyond the separate building due to her weak body. But what nobody knows is that Crystal is actually a man.

In the Rotary family, only women are allowed to live, and men can either rot or become heirs. Crystal, who is weak and powerless, has only one goal in life: to leave the Rotary family and live a normal life.

Crystal had to disguise himself as a daughter in order to survive. He lived quietly like a dead person. But when he tried to leave, he was asked to get married?

Driven into a corner, Crystal sends a proposal letter to Duke Pentrin, who is politically opposed to the Rotary family. He expected him to refuse, but to his surprise, he accepted.

Crystal escapes to Duke Pentrin’s castle. There, he meets Illyan Pentrin, a cold-hearted and cruel man with an ice-cold heart. They got married, how did this happen?

*

“There’s no need to be nervous. I won’t do anything to you.”

They get married, but on their first night, Crystal is shocked to learn that they will not consummate the marriage. Is Illyan saying he wants a divorce? And then he drops the bombshell:

“I’m sorry, my lady… It’s because I’m impotent.”

He whispered with the gentlest voice in the world.