Animal Tamer's Dominion - Chapter 9: Adventuring Rumour.

A 30-year-old NEET is reincarnated into the body of an otaku that choked to death on instant noodles. As he comes to grips with his new life, he realizes that this world is subtly different from Earth. The denizens of this world are far better looking, and this new world also possesses futuristic technology as well as mysterious Yin Yang masters!

After reincarnating, he realized that he was endowed with a miraculous game-like system, which enables him to increase his own stats and transcend the limits of the human body. This system even has a game-breaking ability to save and load in real life!

In this new world that’s akin to a 2-D game, he just wants to enjoy life and head for a glorious future… However, he is quickly embroiled in a complex plot. Can he unlock his true potential and utilize his system to break the shackles that confine him and discover the truth about his previous body’s circumstances?

- Description from novelupdates

Being young is a treasure, but education is indispensable.For Han Yu, who started working at sixteen, being too young wasn't a good thing.Due to his young age, he was almost turned away by the leaders when assigned to a bureau.Witness the story of the youngest police officer in the history of the Linghai Public Security Bureau turning his life around.

Having trusted the goddess who promised my return to Earth, I joined the hero's party and defeated the Demon King.So when that promise was not fulfilled, it was only natural for me to desire my own fall into darkness.Harem | Fantasy | Sex | R18 | SMUT

A major event happened recently to the demonic sect – their powerful sect master suddenly went missing.

Everyone comforted each other: “Don’t worry, the sect master must be out pursuing fun, and so on.”

“Well, that makes sense.”

They waited.

Waited and waited.

Waited and waited.

Waited and… Everyone slammed the table: “We’ve waited so long! The sect master must have met with a mishap! Look for him!!” Numerous disciples therefore ran rumbling down the mountain.

On a certain day of the month, a certain sect master opened his eyes and thought in confusion: Hey, who am I?

- Description from Novelupdates