The Villainess Whom I Had Served for 13 Years Has Fallen - Chapter 151:

After witnessing her fiancé sleeping with another woman, Su Yu got herself drunk at a bar out of sadness and rage. At the end of the night, she accidentally slept with a ‘poor scoundrel’. This poor scoundrel was stubborn, always hounding after her to take responsibility after their night together. Pei Tianlin said, “You took my first time, so you should take responsibility.”Su Yu flew into a rage. “That was my first time too!” Pei Tianlin retorted, “Then I’ll take responsibility. Let’s get married.” Su Yu was flabbergasted. “Dream on!”

She had a feeling she was being tricked by the poor scoundrel, but he didn’t want money or assets. He just wanted a marriage certificate. Su Yu gritted her teeth in anger. “It’s just a marriage certificate! Sure, let’s go get it!” When her fiancé heard that she was marrying a poor scoundrel, he kept trying to persuade her.

“Yu Yu, I know that I hurt you, but you can’t ruin yourself by marrying a poor scoundrel out of spite. If you’re willing, I can marry you.”

Su Yu scoffed. “Go marry your mother!”

Who knew that on the second day of Su Yu’s marriage to Pei Tianlin, countless jewelry pieces, diamonds, high-quality custom-made clothes, luxury cars, and deeds to extravagant manors were delivered to Su Yu. The ‘poor scoundrel’ suddenly became a domineering CEO who spoiled Su Yu to no end.

Rumor had it that Pei Corporation’s mysterious CEO, Pei Tianlin, was a germaphobe. But when Su Yu was eating grapes, he obediently extended his hand to catch the grape seeds she spat out. Rumor had it that Pei Corporation’s mysterious CEO was aloof and difficult to get close to. However, he was nothing but gentle in front of Su Yu. Rumor had it that Pei Tianlin was a fair and unbiased man. But he would break the rules just to protect his wife, Su Yu. Justice and law were nothing compare to his wife!

A detective travels across the United States and becomes an agent of the Los Angeles Police Department.

After getting through the initial confusion, he repeatedly solved strange cases, became famous all over the world, and was called the most legendary detective in history…

- Description from novelbuddy

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

There was a Senior Brother and a Junior Sister. One of them was transmigrated to this world and had cheats while the other was the reincarnation of a Great Emperor.