MTL - Book of Technology - Chapter 49 Zhu Yingchang

Jun Xie was the number one assassin in modern earth. His skills and knowledge in the field of assassination were unparalleled, his accomplishments unprecedented, his reputation terrified the entire underworld. However, during a mission to retrieve a mystical treasure, a mishap occurred…

He is now Jun Moxie, a sixteen year old super level debauchee, sole heir to the declining Jun family. A family of valiant heroes, left with an old grandpa, a crippled uncle and a debauchee as the sole heir! Accepting the world’s criticism and cold stares with a smile, his new journey begins! His life will be carved by his own will! Rise to the top! Evil Monarch Jun Xie!

“This cup I toast to those I’ve killed in my past life. Forgive me, for there is no chance for you to have revenge. Gulp!

This cup I toast to those whose life I will take in my new life. Forgive me, for you are fated to die by my hands. Cheers!”

- Description from novelupdates

“On that day, Zach Harper died-” Or at least that was how it was supposed to be. I died. But there was good news, and bad news. The good news; I was reincarnated! Transmigrated into the World of Aethoria! Holy fuck, miracles do happen! But the bad news was, “Huh? What’s this?” ... [DING!] A New Quest has been issued:- Type:- SURVIVAL Name:- Quest To Becoming Stronger: Description: The {Great Calamity} is coming...Get stronger and survive. Duration-: ... Reward:- ... Penalty:- Death, ??? ] ... I had to survive.

After crossing into the world of Doraemon, he became Nobita.

With an invincible treasure bag, the life of a primary school student is simply boring.

I am preparing to let Shizuka grow up as soon as possible, so that she can marry and go home as a daughter-in-law.

【Ding! You have joined the chat**]

Astronaut Liu Peiqiang: “The sun is about to explode! Who will help me if I give out 200 points~”

“Enlarge the flashlight, shrink the Earth, or shrink the sun and throw it away~”

The richest man, Iron Man: “There’s a purple potato monster who wants to kill half of the universe! I’ll give out all my wealth! Come and help!”

“Time stopper! You can stop the time in the entire universe, and you will kill him again! Perfect!”

“Well, is the time stopper used to kill people?”

“Can you lend me this thing?”

“I have a bold idea!”

“+1”

- Description from novelbuddy

It was a time where demons roamed the earth and chaos reigned. The story took place in Luoyang, the legendary capital of the times. During the night, one could find people holding on to their food with dear lives as they faced off against stray dogs, people with weapons in hand vowing to fight against Fate to their very last breath. There was bloodshed everywhere as some died meaningless deaths, while the strong tyrannized the weak and the truth was frequently hidden. Some of the citizens had completely lost their mind, while some died on their travels. Most importantly, the words of a certain youth caused much panic in the human world. It was a time of little warmth as nights in the capital were frequently accompanied by gusts of wind and rain, and it would be covered with snow during winter. Such were the days…

- Description from Novelupdates