I actually gave the Ghost King a Surprise (Martriachy)

Sypnosis

Bu Tingwan was born into a family of ascetics. As the eldest son, he had a photographic memory, but his physique was not good. He liked to read novels when he had nothing to do.

One day, he came across this female-oriented novel by chance, and it was as if he had opened the door to a new world. However, he had only read two chapters when he was so angry about the fate of a male supporting character with the same name and surname as him that he fell asleep. However, what he did not notice was the label of this article.

——Supernatural and a male pregnancy!

Unexpectedly, he became that poor male supporting character in the next blink of an eye and was about to be sent to the regent queen, who had an unpredictable temper and enjoyed killing people.

Bu Tingwan gritted his teeth: Since he is here, he would not be called Bu Tingwan if he does not avenge his brother with the same name and surname!

Bu Tingwan, who was full of vigor and high spirits, took the initiative to put on his wedding dress and sat in the wedding sedan chair and was carried all the way to the Regent Palace. However, he did not expect that something was wrong on the first day after he entered. It was very wrong!

That night was a full moon night, but the full moon in the sky was scarlet.
Bu Tingwan had a dream. He dreamed that a group of cold black air was slowly approaching him. He could vaguely hear a woman's voice. The person said: "The Bu family actually has such a handsome young man, tsk..."

Bu Tingwan: ???

The next morning, Bu Tingwan met his nominal wife, the regent Si Yan who could kill eight people a day, and heard the familiar voice he had vaguely heard: "Since you and I are married, I will not treat you badly in the future. No matter what you want to do in the future, I can help you, such as revenge."

Bu Tingwan: "Is there such a good thing? Wife~"

Later, Bu Tingwan looked at his bulging belly with tears in his eyes, regretting his decision.

What author! Why didn't she mention  that it has male pregnancy in the first chapter! And this is actually a supernatural novel! Why didn't you say it earlier!