In Different World with Naruto System (WN) - Chapter 03: Chakra attribute

Ou Renjin likes keeping beautiful young men because he likes watching the drama.

Watching them be arrogant and conceited; watching them be obsequious and sycophantic; watching them have ulterior motives and fight with each other, seeing all the evil side of human nature.

Until, he picks up a poor little guy.

The poor little guy is ignorant and helpless, treating Ou Renjin as his whole world, spending all his salary to buy him gifts, standing in front of him in times of danger without hesitation, even…

…saying to him in the calmest and lightest of tones after knowing that their heart matching is successful, “I am very grateful that you have been hiding it from me, but I have long been ready to give my heart to you.”

* * *

036 was born as a test subject, without parents or friends.

As the only successful “petri dish of renewable organs”, he had every organ in his body cut out and transplanted to the rich and powerful countless times.

After getting used to the pain, he met the most special person in the world.

This person was so good that he wanted to cut out his own heart immediately.

- Description from Novelupdates

She has stunning looks and talents that are even more amazing, but she hides both deeply because she understands that beauty is never a blessing. One who is beautiful can only bring trouble, especially within such a society where evil runs amok. In addition, one who is too crafty is disliked.

So to the common eye, she is an ugly woman, so ugly even ghosts would be too afraid to look at her, a weak, ignorant lady.

An imperial edict forces her to marry the well-renowned prime minister of Dong Ling. She cleverly deals with her situation as she faces hidden and openly disdainful looks, smiling coldly and looking on indifferently. She did not want any of this. Why do women make things harder for other women?

She is the ugly, cowardly, useless, frail Lady Zi Yinye. But she is actually the handsome and brilliant prime minister Ye Yin!!

- Description from Novelupdates

Li Yuanqing transmigrated and became the crown prince of Northern Kingdom. He was sent to the borders, after his cultivation and meridans was crippled, because he refused to marry a princess and was not allowed back into the palace ever.

Just then, the Hundred-fold Sign-in System was activated!

Outside his house in the Wilderness, he signed in and received 100 Replenishment pills!

Beside the lake of the Wilderness, he signed in and received 100 Marrow Cleansing pills!

Among the warriors of Myriad City Kingdom, he signed in and received 100 Heavenly Skill manuals!

…

Li Yuanqing had thought that if he just signed in silently and received the hundred-fold reward, he would be able to watch over his younger sister until she became the ruler of the kingdom and until he became invincible.

But he had never thought that one day, the queen of Myriad City Kingdom would come to meet him!

“I am willing to use Myriad City as my dowry. Will you marry me, Your Highness?”

Li Yuanqing did not know what to do when he looked at the queen smiling beautifully before him…

“Shameless Xia Ping, not only did you steal my martial arts manual and medicinal pills, you even took my fiancée! We’re not finished!”