Shadow Monarch in DC - Chapter 22: Secrets of Blackwynd.

Ye Yun traveled to the Star Railway World and obtained the “Shop of All Worlds” system.Through this system, Ye Yun can sell items from across different worlds and invite guests from other realms to visit the Star Rail.His first encounter is with a space traveler named Stelle, and soon... many new experiences begin to unfold.Each time the shop's turnover reaches a certain amount, Ye Yun receives a reward from the system.

Master said, the woman I held in my hands, I must protect for the rest of my life.

Master said, it’s hard to cultivate as a Demon, and once you enter the Demon Dao, you should never look back.

Master said, Heaven is a Circle and the Earth is a Square; that Circle represents (is) consummate perfection, and that Square represents (is) the edges and corners of one’s Heart, it’s a rebellion against Fate, a Disobedience to Heaven.

My master is named Ning Fan, he’s not a person, he’s merely a Butterfly who has entered Demonhood. He was searching for someone. No one knew who he was searching for. No one knew how long he would search for…

- Description from novelupdates

Vincent Strider was a gun for hire who made a living by killing whoever it was his clients wanted dead. But during one mission, he died in a fierce gunfight. However, death was not the end for him. Vincent found himself reincarnated in another world, facing a floating interface that flickered before his eyes.[Synchronizing Host!][Military System initializing.]Vincent found out that in this system he received, he can summon soldiers, tanks, aircrafts, and even warships! This is going to be exhilarating.

In an era of global awakening of supernatural abilities, Lin Tianming awakens his SSS-level talent. He thought he was about to reach the pinnacle of his life, only to overhear the heartfelt thoughts of his school beauty girlfriend who hates him to the core.[Lin Tianming, you didn't expect me to be reborn, did you? In my previous life, you let me down. In this life, I will not be fooled by your sweet words again!]Having a reborn girlfriend who is merely putting on a show is already troublesome enough, but little does he know, there's more than one person he has wronged. At this moment, each of them is on their way to find him!--------------------------Features elements of Lovecraftian horror, with themes of inner demons, corruption, genetic ascension, mechanical ascension, and psionic ascension emerging in the later stages.