The Yu Brother's Case Book - Volume 1 Chapter 9.2

Lin Sui transmigrated into the cannon fodder of a cultivation text, a cannon fodder with a human cauldron constitution, destined to be a servant. Lin Sui, unwilling to resign himself to it, seduced the Son of Heaven, but when the cut out his Dao bone and transferred it to himself, the Heavenly Law struck him down.

That Dao bone in his body became the System that restrained him, issuing the order: You must retrieve all of his soul, serve him as your master in every world, and spare no effort for him until your dying day!

Lin Su was all smiles as he agreed, but all his life, the thing he loathed most was others telling him what to do.

Therefore…

In the first world, he was an arrogant and domineering, rich and powerful Young Master, while the other person was a pitiful and humble illegitimate child.

He humiliated him by saying he was only fit to carry his shoes, and spoke words of love next to his ear when the noise of the crowd boiled over.

System: You motherxxxxxx [beep——]

Lin Sui, innocently: Aren’t I serving him as my master?

In the second world, he was a newly-promoted top talent in the entertainment industry, while the other person was a former Best Actor who went silent after an accident.

He ridiculed and suppressed him, saying deserved to make a comeback even if he was past his prime, and kissed the scars on his body at night, leaving resources behind to gracefully leave afterwards.

System: [beep——]

Lin Sui, spreading his hands: Am I still not sparing enough effort?

In the third world, he was an S-rank Alpha, while the other person was a mentally-damaged former SSS-rank Alpha.

He looked down on him, saying that useless people also deserved to get back on the battlefield, and when no one was around he said ‘since you can’t smell pheromones, then I will be your omega’, and almost lost his life giving himself to the other person.

System: …..

Lin Sui, smiling: Is my dying day enough?

Even though, in the end, he was tucked away in a golden house by the wealthy upstart, captured by the triple gold Best Actor, and completely embraced by the Imperial Marshal, he was still happy.

System, weeping bitter tears: Big brother, I’m begging you, I won’t tell you what to do any more!

- Description from Novelupdates

A 24-year-old woman traveled to the novel world due to a plane crash. She takes over the body of a cannon fodder who bears the same name as her. She traveled to a time when everything was scarce. The moment she opened her eyes, she was told that in two months, she would marry a lame man.Flustered girl : “Why didn't anyone tell me that my fiancé is so good-looking?”Proud fiancé : “Baby, I'm glad you like my face and body. Shall I warm your bed now?”Confused girl : “Didn't they say you are a cripple? How can you move so vigorously?”Vigorous husband : “Where did you hear such rumors? It seems that I need to prove myself to you.”Shy girl : “So shameless...”

As a renowned fierce god in the infinite flow world, Ye Jia deliberately hid his strength after clearing it and found an idle job in the Logistics Department of the Paranormal Investigation and Management Bureau. He originally thought that he would be able to return to his salted fish life and live comfortably. But what Ye Jia didn’t expect was…… One day, he opened the fridge and was met with an evil spirit’s vicious head, “Boss, boss. Did you miss me…..” Ye Jia: “………” He slammed the door shut and fell into deep thought. Wasn’t there something wrong with this world? The TV behind him was broadcasting news: Recently there has been a surge in paranormal events and the number of missing persons has sharply increased. It is currently under investigation….. * With the infinite flow escape game unexpectedly crashing, countless demons and ghosts trapped in it were released, bringing disaster to the world. Only Ye Jia who cleared the game knew the truth. All of these……..were old acquaintances……… Ye Jia: My life is too difficult. #I clearly just want to be an ordinary corporate s*ave# Finally, one day, he saw an unexpected monster. After two seconds of silence, Ye Jia greeted dryly: “…….You came out too. What a coincidence.” The man before him smiled and slowly approached him, “My boyfriend ran away from home. Of course, I should come out to catch him and bring him back.” Ye Jia: “……..” Who would have thought that, along with the global sensation of ghost doors opening in the mortal world, there was also….. His peach blossom debt. It can’t be, sir. This is also okay?

An accident gave Ye Han a magical ability to see through. Since then, his life has become rich and colorful. He has developed the strongest business empire, dominated the gambling world, and rejuvenated his medical skills. He has become a master of medicine and Taoism. The goddesses rushed towards him one after another. As a man, and a limited edition man, Ye Han was under a lot of pressure and had to go on an exploration with a few tomb robbers. However, a shocking secret from ancient times to the present gradually emerged. in front of him!

- Description from novelbuddy