Making a harem after transmigrating - Chapter 15: Getting unconscious. (R-18)

The end of all worlds approaches.

The Demon King Order harvests lives from all manners of living beings.

Within this darkness full of despair,
A single person escaped from space-time, returned to before the world collapsed, determined to change the fate of the past.

But as time pass, he gradually finds out that the Apocalypse isn’t quite as simple as he thinks…

On an apparent normal Sunday, Luke suddenly woke up after hearing a voice warning him of something weird. After assuming that it was just a bizarre dream, he felt an earthquake that nearly destroyed his dormitory. As if things weren't odd enough, a zombie suddenly appears in his room and targets him.Somehow, Luke survived several encounters against the zombies thanks to his skill Weapon Augmentation, but then he suddenly finds a mini-sized elf and a mini-sized dark elf telling him that they want to help.After a stranger offer, Luke learns that something very big is happening with the planet, and now he will have to find the strength to fight against zombies and all kinds of weird creatures that want his neck... he will do all that while avoiding being tempted by those two very suspicious elves.The story, all names, characters, and incidents portrayed in this production are fictitious. No identification with actual persons (living or deceased), places, buildings, and products is intended or should be inferred.

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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My name is Zhang Yanhang, just an ordinary Awakener and a part-time college student living a monotonous life, following the routine of school, cultivation, and home. I neither smoke nor drink; my only hobby is observing humanity during moments when time stands still.I thought my dull life would continue forever, but one night, as I lay in bed ready to sleep, I unexpectedly stumbled upon something interesting.【Enter the Ashen World?】【Option One: Yes (Successfully enter the Ashen World and gain the ability to digitize your body as well as ways to become stronger, the price might be oversleeping and being late for school tomorrow.)】【Option Two: No (Refuse to enter the Ashen World but feel it's a waste to sleep immediately, so decide to stay up all night gaming and cultivating, the price might be oversleeping and being late for school tomorrow.)】【Option Three: Ignore for Now (Suggested for those with difficulty making decisions, you will agonize over whether to enter the Ashen World and will only fall asleep at two in the morning, the price might be oversleeping and being late for school tomorrow.)】ps: The protagonist is not saintly, is decisive and ruthless, and thinks differently from the average person. Please refrain from criticism if this is not to your taste.