Mechanical Alchemist - Chapter 606 - 641: The 5th Notebook

Yasuo Zoldyck, an assassin who was once a biologist seeking to extinguish the limits set upon him- To no avail.

Now, in a world where the impossible is possible, how far will his researching mind push him? Can he break those limits?

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Neptune in One Piece, Tail Beast in Naruto, Fate’s Fantasy Species, Gourmet Captive Cuisine.
This is a dimension restaurant opened in Marvel, connected to dimension world, welcome you to taste the deliciousness of world.

- Description from Uukanshu

A Journey Across Time, A Battle for FreedomWhat if you could go back in time?What would you do?Stop the world war?Stop slavery?When Joseph Situma, a modern-day man, is thrust back to the year 1542, he is reborn as Khisa Lusweti, the son of a village chief in Eastern Africa. Struggling to bridge the gap between his past life and his new reality, Khisa must navigate the brutal tides of history. But as he uncovers the looming horrors of the transatlantic slave trade, he realizes that fate has given him a chance—an opportunity to change the course of history.Armed with knowledge beyond his years and the trust of a people who see him as both a leader and a boy, Khisa must unite warriors, outthink ruthless enemies, and fight for a future that was never meant to be. But history is not so easily rewritten, and with every victory comes a greater challenge.Will he defy destiny, or will the weight of the past crush him before he can break the chains of oppression?A gripping tale of resilience, strategy, and the unyielding spirit of a people on the brink of war.

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.