I've Already Confronted the Five Kage, and the System Just Arrived! - Chapter 313 - 314

[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!......

After an accidental death, in order to continue to live, Gu Bai had to choose to go through various wonderful books to complete tasks.

Every time he became a variety of small cannon fodder inside the story, Gu Bai’s code of conduct when completing task is – by all means, don’t be inferior, don’t be shameless, don’t be upright… hold on to a golden thigh.

… N times after transmigrating

Cannon fodder: (angry contempt) … You’re already so powerful, why are you still shamelessly holding on to a golden thigh to deal with us!?

Gu Bai: (deadpan) That… holding and holding… got used to it…

In her previous life, as Yun Xi lay on her deathbed due to a terminal illness, her famous painter husband said to her heartlessly, “Yun Xi, let’s get a divorce. I would never marry you if I knew that your sister was the one who saved me.” Yun Xi was dumbstruck. It was actually her who saved Mo Ran! She struggled to look at her sister, Yun Lian to see what was going on. Yet, what she saw made her heart sink into her stomach. Yun Lian lowered her gaze as she said, “Sister, I’m sorry. My Brother-in-law and I truly love each other. I’ve been hiding this for so long now, and I can’t hide it any longer.”

A scientific genius named Thomas Harrier was transmigrated to an imperial prince body after a car accident that took his life. He found out that he is in a world similar to our own with a timeline akin to early twentieth century. The body that he is occupying was the imperial prince of a failing empire who suddenly rose to power after a successful assassination attempt of his father. Unaware that the attack is just the beginning of what is to come. He faces many challenges throughout. Will Thomas Harrier be able to live his second life in peace while running an empire and getting it back to its former glory? Or will he succumb into a conspiracy lurking within the country's borders?

Expect some:

Cold war era techs.

Super battleship with advanced electronics, propulsion, and fire control systems?
Helicopters?
Missiles?
Modern medicines and equipment?
AC-130?
A nuke?
Challenger or Abrams or Leopard?
F-4 Phantom or MIG-21?
Colored TV's.

Everything!!!

PS. Cover not mine, I just found it on google.