Seven Sins System - Chapter 171: Hang Out With My Nemesis III

Seun Adebayo’s ordinary life shatters when he’s chosen as one of 100 humans to ascend the Tower of Transcendents, a mystical structure holding the fate of the cosmos. Each of its 100 perilous floors tests his strength, intellect, and spirit, forcing him to confront his fears and ambitions.When Seun awakens the power to manipulate cosmic energy, he begins to realize his destiny: not just to stop the rise of the Primordial Evil but to ascend beyond mortal limits. As the trials push him to rediscover a different part of him.Seun’s climb will shape him into something greater—the god of the cosmos.

『I’m terribly sorry…』

A god was suddenly prostrating in front of Kayano Takumi. He was apparently killed by mistake. Moreover, he can’t be reborn again. However, he is able to live in a different world? Then, let’s do that, please. The god made a mistake again and transferred me into a dangerous forest. Seriously, what’s going on? Besides, there are children here. I can’t leave them here, I will take care of them.

In an era where humanity has long conquered the stars, a girl with a restless heart yearns for more than the predictable comforts of galactic life—she wants to explore the cosmos for herself. But her dream is torn apart when she’s stranded on a forgotten planet, a dumping ground for criminals with no way out.Left to rot among the desperate and the damned, she stumbles upon a strange machine buried in the scrap heap of discarded tools by higher classed planets—one that fuses with her psyche and grants her access to a system unlike anything in known space. It doesn’t just guide her. It evolves with her. It builds. It changes everything.Now she’s on the run, pursued by the relentless interstellar police who want back what she stole. But with each escape, each discovery, and each battle, she pushes further into the unknown, reshaping the wreckage of the past into something new.Blending the inventive spirit of technical progression with the high-octane energy of cinematic battles, this is a story of survival, rebellion, and rebuilding—one shattered world at a time.

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.