After Reincarnating, the Ice-Cold Prince Won't Leave Me Alone - Chapter 20: The phoenix crown falls.

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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Gods and demons are everywhere in the Grand Desolate World.

—She is a girl with a bright smile on the battlefield.

With her silver hair fluttering in the air and dark eyes, the girl sprinted on the battlefield. Her name is Olivia, whose hands is stained with the blood of her enemies as she shows an innocent smile.

The deep knowledge and combat techniques of the entity who called itself a Death God has been branded onto her body. On Olivia’s 15th birthday, the Death God suddenly disappeared. Olivia enlisted with the Royal Army and started fighting in the war as she searched for clues.

Lunar Calendar Year 998. The Kingdom has suffered consecutive losses to the Empire aiming to conquer the entire continent. The innocent girl who lacked common sense will step into the battlefield as the “Strongest Chess Piece” of the Kingdom, and go down the path of a hero—!

Tang Chen was passed over by his handsome death…

Get the weird 9-to-5 system…

Accidentally awakened at the age of seven and started the life of bombing the sky…

Are you sending the Chakra Tree Martial Spirit at the beginning?

Are the nine tailed beasts a spirit ring?

Is the blood follower escape a soul skill?

Sign in and send Tenseigan?

Who has seen soul rings that are more than a million years old?

 …

Xiao Wu? Missing a maid…

Yu Xiaogang? Just missing an apprentice…

Tang San? Don’t think about it, Tangmen, try to dedicate to Xiao…

When the Ten Tails descend into the world, the God Realm will tremble…

 …

Don’t ask if it’s a single heroine, heroines have emotional lines…

Don’t ask whether the abuser is abusive or not, it’s standard to go through and grab the opportunity…

This book has no strange plot, just to make up for the shortcomings…

This book is also known as:

“Nine to five from Douluo Continent”

“Douluo: The God Tree Will Go Against the Sky”

“Douluo vs Naruto”

- Description from novelbuddy