Descent of the Phoenix 13 Years Old Princess Consort - Chapter 969

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

[Propose to Liliana Draven and get rejected.][Success: Gain the All Affinity Crystal and God-Level Talent.][Failure: Lose the system and receive… a handkerchief to wipe your tears]Veer braced himself for rejection, but to his shock, she actually said yes![Ding! Task failed][But a hidden mission has been completed. System upgrading...][Would you like to merge with the Wife Doting System?]_______________________Labeled as a joke for his “useless” Dragon Master Aspect, Veer never expected dragons to take him seriously—or for the School Belle to form a contract with him.And what? she’s an Ice Dragon? And her sister, the Dark Dragon, wants to be tamed too?Veer’s life just turned into pure chaos, and it’s only getting crazier!......

Emperor Xianwu ninth reincarnation, only to break through the shackles, was besieged and killed by masters from all walks of life.

Fortunately, a ray of divine consciousness traveled across thousands of planes to the earth and entered the body of the dead young man, just to get rid of the anger in his heart and to regain that peerless peak!

- Description from MTL

After the nuclear warfare, massacres started to spread throughout the entire world. The order between humans completely collapses, and the strong eats while the weak gets eaten becomes the #1 rule.