Custom Made Demon King - Chapter 45: Building a City

Layton just wanted a weekend alone in the wilderness. Instead, he woke up in a nightmare.Earth has been inducted into a multiversal system, and survival is no longer guaranteed. Forced into a brutal wave dungeon with no warning, no tutorial, and no gear, Layton accidentally locks himself into the weakest class—Healer.That’s when things start feeling… off.He’s leveling way too fast. His so-called “support” class? Feels anything but weak. And his only ally? A too-intelligent, bloodthirsty predator that might be more than just an animal.Something is wrong with this system. Layton just has to survive long enough to figure out what.

An Individual from Earth finds themselves in the Shinobi World, equipped with a Scientific System. From that moment, he delved into scientific research far ahead of its time.

Entering the mortal world for a hundred generations, do not compete for the youth of one life, but only for the day and night of a hundred generations.

Seeking immortals in the world of mortals.

My name is Li Qing. I have escaped from the mortal world in the third life, entered the Tao in the ninth life, and become immortal in the hundredth life.

(longevity stream, non-simulator, non-reincarnation rebirth)

(Bai Shi Shou Yuan, One Life Life)

- Description from novelbuddy

Born into a wealthy family, Gu Shenwei was spoiled and carefree. However, at the age of 14, his entire family were brutally murdered, and he was caught by some bandits who sold him into slavery. As a slave boy, he entered Golden Roc Fort by chance and found the man who had slaughtered his family. He endured insults and worked hard to improve his kung fu while working as a slave boy. He learned from and plotted against his enemy under the enemy’s nose. He became increasingly ambitious as he became more and more powerful. He would only be satisfied if he completely destroyed his enemy—by fair means or foul. Gradually his bitter experience turned him into a totally different person.