MTL - The Record of Unusual Creatures - Chapter 3 Wolf

In The Kingdom of Elves, the War of Gods 1000 years ago caused the fall of the World Tree. In a world where true gods rule, the fall of the elven civilization came soon after.

A 1000 years has passed, the new World Tree is now reborn.

Eve Euktrahill, the Mother of Nature, the Goddess of Life, the Great Ruler of Elves. Armed with the ability to connect to the Internet on the blue planet, She(祂, a pronoun used for god) now must rely on players from the blue planet to help her goal of reviving the past glory of the elves and the World Tree.

Chen Rui, an otaku from earth, is reborn into a human body in another world, who falls into the legendary evil, brutal world of the devil called Mozu where humans are treated as food. He has to survive while facing horrors of the devil, violent dragons and a variety of powerful enemies by depending on a strange super system chip and his wits. Surrounded by Devil’s beauties such as black-bellied lolita princess, cold queens, violent dragons, charming poisonous devils …

Wanting to live in the Devil’s world is hard! Wanting to live in the Devil’s world as a human is harder! Wanting a human to be the devil’s son-in-law is hardest!

Let us see how a small otaku uses power and strategy step by step starting from an ordinary human to writing a legend as the devil’s greatest son-in-law.

A legendary powerhouse of his generation, tired of the bustle of the peak, returned to the ordinary city and started a new life as an ordinary teacher. He wrote the legend in the city.

Magnificent mountains and rivers, the rising powerful ones. Some ancient martial art masters stood at the peak, becoming legendary. Some financial crocodiles rose up in the minuscule places, laughing arrogantly.

However, watching the school beauties was better than fighting and killing; educating was better than fighting for fame.

- Description from Novelupdates

There’s a legendary Bishoujo Game that has become popular among Japanese gentlemen.