Endless Journey: Infinite Realms - Chapter 773 Interlude: Asteria's Typical Day as a Student Part 17

This book is about baby-making.

This is a world where humans, demons and mysterious beasts coexist.

Humans cultivate mysterious qi. Demons cultivate corporeal bodies. Mysterious beasts cultivate soul perception.

A legend says that in the middle of an endless rainforest, there are extremely powerful existences; they are called demon kings.

Some demon kings have a tyrannical corporeal body, some are experts in illusions.
Some demon kings are proficient in magic, some can even move mountains.
Some demon kings are able to sense things thousands of miles away.

These demon kings rarely appear in the human world. Even if they emerge in the human world, they would reincarnate in human form; assimilating with mankind while seeking to breakthrough realms…

- Description from Novelupdates

Ryu Han-bin, the main character who fell into a new world after being chosen as a ‘suitable person’.

Because of the error in the guidelines, the training is repeated endlessly…

What is a young teacher to do when stuck with four cute little students in a beast apocalypse?. It's obvious, raise himself four little wives!!Well it's not his fault after all. They are the ones initiating it. As far as he's concerned, he's the victim of the story.“These four little devils, they are definitely after my back!”