As a Father, I Just Want to Watch You Achieve Immortality - Chapter 4: Immortal Artisan Upgrade, Bad News Arrives

In the world of One Punch Man, the seventh S-class hero of the Hero Association, the King Engine King has obtained the super god skill system.

As long as you have reputation, you can extract the skills of the heavens and the world!

DNF’s extreme swordsmanship, the flames of fire in the god of death, the Tensei and Samsara in Hokage, the top three-color domineering in Pirates, the dragon slaying magic in Fairy Tail… Look at the system panel. For the 100 million prestige balance, KING took a discount and chose Stud. “Ding!”

- Description from novelbuddy

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.

One day, Luo Jian woke up from his sleep and found himself in a locked chamber where the door and window were all sealed. A note with a few lines written on it was tacked to the wall: “Escape from this room within an hour, otherwise, you will die.”

There is a sequel called Reincarnation Night (轮回之夜) that takes place in the same universe but has different main characters

- Description from Novelupdates

-I could hurt them. I could kill them all, but not you. If it were up to me, you'd never see a drop of your own blood again.–***Destiny is an unpredictable force that no one can control.This is especially true for Tyler, a homeless omega who lives in shelters and works odd jobs to get by.When a rogue Alpha attempts to kill him, Tyler's life takes a turn for the worse.However, things get even more complicated when Sasha, an Alpha, and powerful figure in the mafia, takes an interest in him.Despite Tyler's reservations, he is forced into an arrangement with Sasha, and over time his initial distrust begins to fade.But their relationship is tested when the rogue Alpha reappears, revealing secrets that threaten to tear them apart.Caught in the middle, Tyler and Sasha must choose between confronting the demons of their past or risking everything they've built together.