MTL - Invincible Non-stop Upgrading System - Chapter 12 You double

At some point in the 21st century, the Christian God stopped listening to the prayers of humanity. Monsters with colossal strength and endurance began to emerge and humanity entered its darkest period.

Mark is a genius military weapon designer who was kidnapped by a mafia gang after refusing to work for them.
They forced him to design unique weapons for five years, until one day he successfully escaped only to get shot by his trusted comrades.
*Ding! You awakened a weapon system.
When he opened his eyes, he was in a different body and in a different world.
"You want to kill a wild boar without being detected? Forget about bow and arrow. Here, I present you this sniper rifle."
"You want to kill a horde of goblins from the sky? Forget about those flying carpets and brooms. Here, I present you the fighter jet."
"You want to kill a dragon? Forget about taking the help of the S-class adventure team. Here, I present you a nuclear bomb."
Join Mark Spencer/ Lu Zhen as he brings the whole world to its knees with the help of his weapon system.
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Note: Author isn't born in an English-speaking nation and has no editor either. So, please be understanding if there are any grammatical errors.
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Got roomed with another straight man in a love hotel and had to share a bed. Meeting by the road side on a certain day, the boy in his arms was smiling wildly.

Hey, let me explain myself, don’t go ahead of yourself. I was just being a samaritan. I had to help, even if I lied about being a straight man like you.

Are you running away after getting me excited? Let’s see what kind of ending you want today.

Since you all asked for a wife chasing crack, then let’s perseverate to the end. I’m not crazy, you are the one who is crazy. This is probably a crack but still gentle gong and a shou fighting against the crack story. Lighthearted! Comedy! No brain cells will be lost!

- Description from Novelupdates

There was a time when every living thing was decimated and the galaxy was forced to restart with a single thought from the evils.“Is the final boss my wife?” Xu Chang’an exclaimed as he looked at his wife who was making dinner and shook his head. “The system must have malfunctioned again.”Under the tree in his garden, Xu Chang’an wrapped his arm around his wife’s waist and said, “There is something I have to settle outside. I’ll be back soon.”“Okay. Stay safe.” After seeing the husband off, his wife raised her head to look at the leaves and said,“I think my husband is going to cheat on me soon. Should I… just restart this world?”