Itai no wa Iya nanode Bōgyo-Ryoku ni Kyokufuri Shitai to Omoimasu - Chapter 324

Bai Aoxue, the best mercenary in the 21st century, is accidentally sent back to the Chengxi Dynasty in Great Continent due to an explosion in her mission, and trapped in the first daughter of Prime Minister. After her rebirth, she is set up by her father to marry the 5th prince Jun Yeyan who wears a mask all day long.
In the face of bloodthirsty enemies, discord between brothers, collusion among courtiers and invasion of enemy state, can Bai and Jun resolve the crises? What will happen to their political marriage? How will the fierce battle for the throne end?
With many twists and turns, the book brings you to experience palace revolution, love and hatred thousands of years ago.

- Description from Novelupdates

A world where awakened individuals with special powers emerge due to a system. At the New Spring Kindergarten infant class, Gru awakens as an S-rank Hunter at the age of 4. Along with this, there is a quest assigned to her… [Quest: A child needs a strong guardian!] Why is a guardian needed? That is because Gru has no mother or father. Gru, who had no family, is adopted by the greatest Hunter in South Korea after many twists and turns, and along with that, new skills are developed… [Let’s try registering a new guardian in the slot!] [Children can earn ‘filial piety points’ through various activities, which can be used in different areas.] Gathering guardians enables faster growth? ‘That’s amazing!’ Alright, I’ll gather all the S-rank guardians!

In a world where 99.9% of all men were wiped out and future births only had a 0.1% chance of being male, the role of men in society became that of celebrities graciously donating their seed to the masses. With the world population declining, pregnancy has become a social status, affording women government assistance, health insurance, and citizenship should they find a man to bless them with seed. With an only 1 in a 1000 chance of finding a guy, many women will do anything it takes to get close to a man and become pregnant. And should those women bear a male, it’s like winning the lottery, the remainder of their lives set as they receive massive stipends and no responsibility but to nurture their sons. Clyburn was reincarnated into such a world. Can a former unsuccessful business man properly navigate a female-centric world full of woman who just want to use him for his seed? With an overprotective mother, two caring sisters, and the mind of an adult, he might just.

Let’s fight! Go! Who am I afraid of with a chip that turns into a brain cell? ! Get promoted and get rich! The nest treasures are all mine!

- Description from novelbuddy