I'm Not the Heroine - Chapter 64

A continuation from where High School DxD Volume 25 left off.

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.

Jiang Bai woke up one day and found with shock that he had transmigrated to a parallel world that is similar to Earth. There, he was granted a cheat system to help him forge the path of a tyrant in this new world. He was now stuck in this parallel world body, the body of a weak and cowardly person. Join Jiang Bai as he rose to the top in this new world!

- Description from Novelupdates

Marrying her best friend was a dream come true for Kelly, but everything truly has a limitation.Pierce is Kelly’s first love, but as his best friend, she knew well there was always another woman deep in his heart.Lexi Gilbert. The woman Pierce could never forget even if he had already been arranged to marry Kelly.***Kelly finally realized their happy marriage of the last three years was just a beautiful dream when Pierce asked for a divorce just because Lexi returned.She could only be his best friend even if she was carrying his baby.***Since their friendship had become a cage, Kelly chose to set him free, as well as the miserable herself.But why then, it was Pierce who became the one who refused to move on?To make matters worse, her devil stepbrother also domineeringly stepped in at the same time, asking her to be his.***Her Prince Charming vs. Her Devil Stepbrother?How could Kelly save her heart in this battle of love and hate?