Mr. Zhan's Little Demon is All Grown up - Chapter 15: You Are Mine

I became the Heavenly Demon’s dog.

The king of assassins was reborn, mastering both alchemy and poison. Sitting inside the space, there was a ghost that loved crying.

Buying a sickly boy for a hundred gold coins, becoming the master of half a country for no reason.

On their wedding night. She slightly hooked her jade finger, “Come here.”

The man tried weakly bargaining, “Can I redeem myself?”

“No!”

“Can we wait for the bridal chamber tomorrow?”

She cast a cold gaze, “Give me a reason.”

“I…..My period is here.”

Her head was covered in black lines, “Do you think you would even believe that!”

After four hours——

She weakly said, “I can’t go on anymore, wait until tomorrow.”

The man revealed an evil charming smile and turned her over before pressing down, “Want to run? Too late!”

- Description from Novelupdates

A man who was once called the world’s strongest agent ended up becoming a teacher after his retirement, to train a new generation of agents. After many years of training his disciples, he was killed at the age of 60 by a secret organization’s ruse and was reincarnated in another world with his memories intact. Though he was surprised by the existence of magic and the strange species in that world, he quickly adapted to his condition as a newborn and took advantage of it. He acquired special magic and gained a massive amount of strength thanks to his rigorous discipline, in order to reach his goal: Resume his career as a teacher which he left halfway through in his previous life. This is the story of a man, who, based on the memories and the experiences of his previous life, became a teacher who travels through the world with his students.

This novel is also named “The game I got is different from yours” | “Game is different, what to do” | “Every time the target is the big BOSS” | “Why is the BOSS of Horror games always the most handsome?” | “They are running for their lives, I am falling in love”… and so on.

The protagonist is a slave to beautiful faces – he likes good-looking people, can’t say no to a pretty visage, and is filled with thoughts of love. One day he bound with a target-attack system where he can travel from world to world and experience love with the most handsome (key point!) target!

The number of players in each game is not set. The protagonist has only one target – the most handsome one. As he falls in love, he realizes… the other players perhaps, maybe, probably… have Horror? Survival? Escape-type games?

- Description from Novelupdates