MTL - Doctor’s Life Simulator - Chapter 308 Qin Lang's chief surgeon, reward: Introduction to the research and development of new anti-tumor drugs

The world is divided into three parts, with never-ending alliances and conflicts.The magnificent Jing Dynasty is at its peak, with four great caves, four secret places, the Martial Guard, and the Inspection Bureau.Everyone practices martial arts, striving to reach the realm of grandmasters and great grandmasters.Reincarnated as the heir of Prince Qing, I possess god-like senses and cultivate amid wealth and glory.I aspire to become the supreme grandmaster, pursuing immortality while resisting foreign invasion and internal chaos.I stand unrivaled, dominating the world with martial prowess.

When Fang Zheng opened his eyes, he was surprised to find himself reborn in a fantasy world of magic, dragons, knights, and princesses. Not only that, but even the game system that Fang Zheng had designed before also followed him into this world. Then, his next step would be to traverse thousands of plains, gain endless strength, become a brave hero, defeat the devil, marry the princess, reach the apex in life… wait, wait, wait, before all that, why was he reborn as someone who everyone called a cultist?

As a promise, he went out into the world as an assassin. 3 years later, after becoming the Supreme Assassin, he gave up on everything he had and returned to the ranks of ordinary people. But one day, Kismet, a mystical game created by the National Research and Development had appeared.

Enigmatic hands, spectral frame, and one cunning strike just like the swing of the Grim Reaper. The Supreme Assassin takes on the mystical world, and how his legendary tales sets off, progressively ascending the altar to becoming the best.

- Description from Novelupdates

A young man with an extraordinary mind is off on an exciting adventure when he mysteriously wakes up in the body of a feeble slave-guy in a different, rich in quirks world.

The main character, a selfish jerk, would use extreme means to achieve his goals. However, he never allows his base instincts to overrule his sense of decency. He always pays back both good and bad deeds.

Will his (terrible/excellent) mentality help him make a fresh start? Will he get through misfortunes and hardships of the new world?