Naruto: The Wind Calamity - Chapter 689 - 683 : Saisho no Hikari

Qin Wuyue, a pseudo-house on Earth, traveled to the world of Hokage and awakened the legendary Goldfinger. The system is very violent and works flawlessly. As long as you complete the optional tasks, you can directly obtain super-powerful items of cultivation, abilities, ninjutsu and other planes. But Wuyue couldn’t be happy at all, and even had the idea of ​​wanting to die with this damn scumbag.

“You pervert wearing my camisole again” a certain elder sister roared loudly. “Take it, this is the fat time I just changed in the morning.” A certain senior said expressionlessly.

“Jun Wuyue, it’s time to collect material again, take off your pants.” A certain wife next door lit up. “If you bastard dare to steal again, I will break your third leg.” A certain beautiful master shook his fist with a cold expression. “I’m really not a pervert, I’m being forced, you believe me” Wuyue burst into tears, looking up at the sky at a forty-five degree angle

- Description from novelbuddy

One day every human on the world suddenly receives a mail claiming to enact the World Salvation Project. Half in doubt Kurosaki Shion, a diligent university student and loner, follows the mail’s instructions, becoming one of a million Demon Kings governing his very own Domain in the new world.

*** This is a post-apocalyptic story containing many fantasy elements. It is a somewhat dark tale following Shion as he grows while aiming for the unification of the all too sudden new world. It has many game-elements bolstered by strategical thinking while at the same time providing funny moments and romantic encounters.

The end of all worlds approaches.

The Demon King Order harvests lives from all manners of living beings.

Within this darkness full of despair,
A single person escaped from space-time, returned to before the world collapsed, determined to change the fate of the past.

But as time pass, he gradually finds out that the Apocalypse isn’t quite as simple as he thinks…

- Description from novelupdates

In short, MC inadvertently created a world, but as the creator of the world, he did not know the world at all. He should have lived here like a fish in the sea with some plug-ins that MCs always have. But now he is even stumped by the bugs in the instant world. Luckily, in this world he has found his shadow guard, or his lover? So the daily adventure is getting not so boring…

- Description from Novelupdates