My Entire Family's Gone Haywire! - Chapter 67 - Land

Based on the popular Vocaloid series, by HoneyWorks, called “Kokuhoku Yokou Renshuu (Confession Rehearsal)“:

Natsuki, a third-year at Sakuragaoka High School, who holds unrequited feelings for her childhood friend, Yuu, who’s in the Film Club. However, instead of being honest about her feelings, she makes him be her confession “rehearsal” partner. Unable to say her true feelings, things start to get complicated when Miou and Akari, who are also in the Art Club, get involved! Will she ever be able to confess for real!?

After being awakened from their slumber, billions of people found themselves dispersed in various sealed crypts. Surrounded by earth, they each had only a shovel.

This novel is also known as Lady Is a Dragon

Five years ago, she left an egg and said, “This is the son I gave birth to you. When he grows up, it’s my return date.” He thought she was joking, but the son broke out of the egg a few months later. She looks like a baby, but there are two shiny, cute and cute little dragon horns on her head, but she has no return date.

*

Later, she disappeared for five years, and he also went crazy for five years, until Xiaolongzai brought back a woman, and he sobered up on the spot… But Xiaolongzai said: “Father, although you don’t have a wife, you will soon have a daughter-in-law. She saved me, and I want to make a promise to her!”

*

Since then, the father and son have fallen into open and secret struggles for favor.

“Your Excellency, Ms. Si’s medical skills have amazed the world, and big shots from all walks of life are fighting to spoil her. Your hero is useless to save the beauty…”

Mo Yinhe suddenly fell to the ground, coughing profusely: “Quick, call her to save me!”

“Your Excellency, the seven rivals who were tortured to the point of death by you are all Miss Si’s own brothers, and they want to take Miss Si back to inherit the throne…”

Mo Yinhe announced his abdication on the spot, and dragged his son to live on the street: “Son, from now on Dad can only follow you to your wife.”

The little dragon cub shook the shiny, cute little dragon horns on the top of his head: “Father, I have already contacted you with a nursing home, so that you can spend your old age safely~”

- Description from novelbuddy

Xia Yuqing is a shut-in+fujoshi from the 21st century. After an accident, she transmigrates into the body of a young princess forced into a political marriage to another country.