Isekai Maou to Shoukan Shoujo no Dorei Majutsu - Volume 1 Chapter 3.12

After dying alone in a mental institution, Fang Junrong discovered that she was the evil mother-in-law in a prominent family doting novel. Her daughter-in-law was the female lead who was loved by all.

In the novel, the female lead was kind and nice, and the male lead loved her so much that he’d die for her in a heartbeat.

Her future father-in-law doted on her and treated her better than his own daughter.

Fang Junrong, the evil mother-in-law, was the only one who didn’t care for her. She had gotten the evil character’s script and wanted to set the female lead up every chance that she got and finally landed herself in the mental institution.

After she was rebirthed and facing her son who wanted her blessings, Fang Junrong tore up the script. Whoever wanted the role of the evil mother-in-law could have it! She was going to get a divorce and take half of the money, then she’d figure out where she wanted to go from there!

A 29 year old civil employment exam student wakes up in a blank white room and meets a baby angel. This baby angel informs him that he died in his sleep due to heart disease like his father and grandfather. Remembering his mom and their last conversation he says that he will take on a series of life and death tests that the baby angel offers him. From this point on he must put his life on the line and fight in the stage called ‘Arena’. And Every time he clears a test he will gain abilities and weapons to increase his strength. All to clear the tests and get his life back. This is his story of his fights in the ‘Arena’.

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

I was a genius in the Earthen Plane.