MTL - My Doomsday Territory (My Apocalypse Domain) - Chapter 691 Perfect container

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.

Getting the [Boosted Gear] is expected for Issei. What if he gained it a month early and another one as well? Let the Games Begin... IsseiXHarem (if it wasn't, it wouldn't be DXD). Now has a TVTropes page! Getting the [Boosted Gear] is expected for Issei. What if he gained it a month early and another one as well? Let the Games Begin... IsseiXHarem (if it wasn't, it wouldn't be DXD). Now has a TVTropes page!

You take up a student career.

Student career upgrade to lv.7

Acquired skills: primary school knowledge, junior high school knowledge, high school knowledge.

You take the college entrance examination,

You got a perfect score.

Your basic occupation has been upgraded to lv.9, and the job transfer system has been activated.

You change jobs to become a scientist, you gain R&D skills

You use research and development skills to get space fortress construction technology

You use R&D skills to gain starship technology.

You are invincible.

- Description from novelbuddy

He is back! This time fiercer, faster and stronger, with only one thing in mind. Revenge!

Prince of Darkness, Son of the Devil, Lucian is back and he has only one thing on his mind. Revenge! That's until he meets her. A woman who entices him beyond reason, but who also claims to be his wife. Surrounded by dark secrets and powerful enemies Lucian must decide who to trust and who to destroy.

After getting her heart broken once Klara vowed never to fall in love again. But when her brother tries to force her into a marriage and the annoying but wickedly handsome Roshan rescues her, things get difficult.

Can she protect her heart from the man whose touch sets her body aflame? Or will she surrender to her desire and risk her heart once again?

*Sequel to Married to the Devil's son*