MTL - Today the Manager is Also Very Kind - Chapter 13

Transmigrating into a different world where Guardian Beasts reign supreme, Gu Xing is supposed to be the chosen one envied by all!The first Guardian Beast he summons turns out to be a rare Epic Level Enchanting Demon!However, just as all eyes are on him, this Enchanting Demon betrays him in public.“Master, he's offering too much!”She then turns to the embrace of a rich heir, leaving behind a scene full of ridicule.Yet no one knew, Gu Xing has awakened a system that could see through all Guardian Beasts' training paths!Amidst the laughter of the crowd, he contracts with an Angel deemed “crippled.”After using materials to heal her wounds, the Angel fully recovers...Gold... Legendary Talent!​

This novel is also known as Long Live the Mad Wife!

Daughter of the Feng Family, born a waste. Forced to marry a fool in an attempt to expel evil influences. When the first killer from the 21st century possessed this body, the sky and the earth surged. She was indifferent and cold-hearted but she let her guard down around him alone. She thought he was a pleasant sheep but didn’t expect him to be a gray wolf in disguise!

- Description from Novelupdates

After an accidental electrocution, Zhang Yi realized he could hide his body and become an invisible man. That incident marked a new chapter in his life. The magnificent president of the company, the hot policewoman, and the mischievous daughter of a rich man.“Apologies. I'm a righteous man. I've never abused my power of turning invisible to creep on beautiful girls, because I'd only stand boldly before them to look at them! You can't see me. You can't see me. You can't see me…”

At some point in the 21st century, the Christian God stopped listening to the prayers of humanity. Monsters with colossal strength and endurance began to emerge and humanity entered its darkest period.