I'll Come Clean! I Am The King Of Lolan! - Chapter 87 - Lorne’s Explanation.

Huang Dan’s pain nerve is innately different from the ordinary people. A little tore in his skin can cause him to sweat all over his body painfully to the point of him unable to make a word out.

Somehow, he began to cross world, following Mr. System to do the tasks…

In the first world, Huang Dan realizes what it means to die painfully and to live to die again.

TL’s summary:
MC suddenly transmigrated and is bind to a system, requiring him to solve mysteries. Born with a higher degree of pain sensitivity, he met different people in the different worlds and learns what kind of emotion smiling is.

- Description from Novelupdates

Yan Qingsi was a woman so captivating that she could change the lives of anyone she crossed paths with. Shunned, shamed, and abused by her family, they wanted nothing more than to see her turn up dead. She had other plans though — she was determined to exact revenge on all who have wronged her, and her main target was her own blood. The first step in her quest for revenge? Seducing Yue Tingfeng — the richest, handsomest man in Luo City, who also happened to be her aunt’s fiancé. Vengeance aside, she also seeks a change of fortune by pursuing a career in acting. Throughout Yan Qingsi’s journey, there will be murders and mayhem aplenty as she paves her way to movie stardom while eliminating her enemies one after the other!

- Description from Novelupdates

This novel is also known as I Possessed a Demon Sovereign

Chen Luoyang felt that something was wrong with his transmigration. After transmigrating, he possessed the body of the highest expert in the world, the Master of the Demon Cult, addressed respectfully as the Demon Sovereign.

Generally, aren’t supreme experts the ones that leave behind a wisp of their soul behind and occupy a new body of some miserable low-level youngster then they go on a journey of revenge and make a comeback?!

Or perhaps it would be transmigrating into a miserable youngster’s body and obtaining a cheat slowly walking the road to becoming a God?

But why did his transmigration seem wrong?

Now my environment is full of big shots and I feel like I’m going to be exposed!

- Description from Novelupdates