MTL - The Upgrade System of All Realms Starts From Conquering Naruto - Chapter 96 I don't believe this is a coincidence

The formless ancient world was infested with despicable demons. They hunted and feasted on mankind, keeping the human civilization constantly in a weak and suppressed state.

A Federation Colonel with abnormal thoughts was locked in a dark room and met a little looney.

“Your whole body emits a scent that I dread (covet) and fear (desire).”

A frigid Colonel X little looney roommate: A sweet story of interstellar travel

- Description from Novelupdates

After crossing over into the game world he had played before, Su Nan finds himself as a nobleman who has lost his title. At this time, the continent is still a barren wasteland of elements; powerful wizards abandoned this world a thousand years ago to explore the multiverse, becoming little more than elusive legends.Only Su Nan knows that, a thousand years later, the elements will revive, the wizards will return, and the continent is about to enter a prosperous era of magic.So, his task is quite simple: work hard to cultivate and become a wizard, surviving until the age of wizards arrives!“Resource-poor?”“There’s nothing for it; I’ll just have to synthesize everything myself.”Su Nan opens the synthesis cube. This is the story of a traveler with a player panel and a synthesis cube, leveraging a slight advantage of foresight to make a name for himself in a foreign world.

Yang Qing never expected that he would travel to the fairy world, let alone that he would have a chance to travel back.

It’s just that after I came back, I found out that this world is not friendly to cultivation, and it’s a completely degenerated world, so what else can I do?

Part-time work is not allowed, so he can only rely on the rune technology of the fairy world and develop a little black technology to live his life, so his eyes are directly fixed on the moon above his head, where his dream begins!

- Description from novelbuddy