Rural Carefree Little Immortal Doctor - Chapter 658: Regret

Transgressing into a new world, Xu Shan found himself in possession of a mysterious book that granted him the ability to manipulate reality at an equivalent price.

However, he soon realizes the world he now inhabited was far from simple, especially since the body he transgressed into belonged to the Third Prince of the strongest dynasty, who had been born with a Demonic Heart.

Afflicted with the unique ability that made him incapable of growing stronger other than by devouring the strength of others, he understood that his path was destined to be filled with bloodshed, manipulations, and schemes.

There was only one thought in his mind... to survive by becoming stronger in a world where strength reigned supreme, even if it meant plundering the Heaven itself!

Witness what happens when a human crosses the line and sets foot on the path of trying to control reality itself, ultimately becoming a villain so despised that the very heavens craved to erase him from existence...

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When he opened his eyes he found that he had been reborn as an extra in a novel, which he finished reading yesterday. On top of that, he has become a student of the same battle academy, where the main plot will happen. Let's accompany Rio on his journey and find out where it leads us.“i will steal protagonists chances, as for what will happen to main plot if i do so? i don't care!” (Rio)*The book cover doesn't belongs to me if someone wants me to take it down please contact me directly.*(MC is selfish and cares most about himself, rather than following the main story he will follow his own will. and there's no harem too.so, if you like a hero of justice and a plot following type mc with a harem or something then this is not your cup of tea.)

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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A story following a young hunter named Jay. He has grown up in a world where dungeons, monsters, and humans with leveling systems are a cultural norm. At the age of 20, he awakens a skill that allows him to steal the abilities of monsters. While others are stuck with a specific skill set, he continues to grow stronger after every battle.

Follow Jay's journey as he learns more about his unique situation in a world that's grown blind to the real dangers of modern-day dungeon diving.