DxD: I know…I'm not the real one,just a cheap copy. but...I'd win - Chapter 45: A Bug in Heaven’s System

Xuanyuan was reborn into a strange new world where training to be a Xian was a cornerstone. There was however something ancient dwelling inside his body. He could now devour all of creation…

This is the journey of an ordinary boy and his transformation into the supreme being that reigns over all existence! Everywhere he went, he could not help but tie his fate with numerous women. It did not matter whether they were a goddess or a devil…

- Description from Novelupdates

While the demons were rising, mankind was about to become extinct. Six temples rose and protected the last territory of mankind.

Because of a broken net, Lin Changqing traveled to a terrifying world where warrior monks suppress the world, where demons and ghosts wreak havoc on the world!

Fortunately, Broken Net is not a mortal thing, it can capture everything in the world and endow it with a little spirituality!

Everything becomes a pet, a talent is born, Lin Changqing acquires a pet talent, and strengthens himself!

So in this world, there is another terrifying existence with countless strange pets!

“You thought I was holding a weapon?”

“No! It’s actually my pet!”

The bamboo stick that knocked down the big demon happily flew back into Lin Changqing’s hand!

- Description from novelbuddy

"Locke transmigrated into an era where everyone had Battle Beasts. Daemons were rampant and humans were forced to build walls around their dwellings while depending on Beastmasters to keep those monsters at bay.