21st Century Archmage - Chapter 90: Drunk on Wine and Lips

The protagonist of the collapse of the three former civilizations is Dr. Mei. What is the end of logic, the strongest brain, super intelligence, this is the story of the strongest scientist of Honkai with knowledge of the moon becoming the god of science!

- Description from novelbuddy

Lu Xiaoran has traveled to a fantasy world and received a system, but the useless system has not been activated for a long time. Lu Xiaoran, who had no choice, could only cultivate in a low-key manner and grow steadily. However, after Lu Xiaoran had become the strongest existence in the entire sect, the dog system suddenly activated.

Due to a problem in his soul, Rean never cared about anything in his life. Even though he died heroically, there wasn’t really a 'will' behind that action.