Reincarnated as a demon inside a dungeon - Chapter 52

Perhaps it is the choice of fate. As a senior otaku, Qian Lingfeng got the “steel shell system”. However, when he swept the world with the system, became a local rich man, made all kinds of beautiful women, opened a harem, and realized the ultimate fantasy of thousands of otaku, he found that things seemed far from simple!
When the end comes, biochemical zombies suddenly come down, fierce beasts are in power, bloodthirsty zerg roam to kill the world, and human lives are comparable to dirt. Where will weak human beings go in this world? Is humanity going to be extinct? Or … can an otaku save the fate of the human race?

- Description from Novelupdates

500 years ago, Chen Xi was devoured by a crack in the void and was transported into a cultivation world.

Chen Sha came to a world of immortal martial arts and was ordered to take charge of the world’s first sect.

Before his death, the previous chief told him:

“If you don’t become the best in the world for one day, you are not allowed to go down the mountain for one day.”

So he closed himself in painstakingly, crossed the heaven gate in his body, and faced off against the ancient and modern powerhouses…

…

Many years later, Chen Sha recalled the day he went down the mountain,

From the moment he descended the mountain, he was number one in the world.

In the next ten epochs, any gods and demons have returned, immortals and Buddhas have lived in the world, ancient powers and ancient gods have appeared one after another.

No matter how the times change, he has always been No. 1 in the world and has never changed.

- Description from novelbuddy

Haruto Saito, was playing a mobile game called “King of Cards” when his phone exploded due to overheating. He then transmigrated into the world of Naruto and found out...Why can I see the name, identity, and reputation of each of them?Killing hostile ninjas will drop cards? Ninjutsu cards! Taijutsu cards! Forbidden jutsu cards! Mystic jutsu cards! Can cards be eaten? Will you gain corresponding abilities after eating them? What are equipment cards? Killing Uchiha clan ninjas can drop Sharingan bloodline cards? Killing Hyuga clan ninjas can drop Byakugan bloodline cards? What if I kill Kaguya? ! !Naruto world is gamified! Reputation exchange! Ninjutsu enhancement! Achievement rewards! Unlimited first kills!“Excuse me, I'm not targeting anyone, I just say that everyone here is garbage!” At the Five Kage Conference, Haruto Saito said lightly, tapping his fingers on the table.