Counterattack of the Cannon Fodder Chambermaid - Chapter 1

“Power to accelerate Everything including time!!”.....Damien Harrier was a ruthless small-time gang leader, feared on the streets—until the night he let his guard down. The woman in his bed was a trap, rigged with a bomb by his enemies. She exploded. He died.But death wasn’t the end.He awakens in a nightmarish battle royale where thousands fight for survival under the gaze of the Master of Reincarnation. The rules are simple:Only the top 10 earn a second life.Refusing to kill means ceasing to exist.Your performance determines your talent in your next life.David fights his way through the slaughter, becoming one of the strongest contenders. Then, everything goes dark.When he wakes again, he’s not on Earth anymore. He’s been reborn in a world recovering from an apocalypse, where lords rule over crumbling territories and every person awakens a unique ability at eighteen.Thanks to his past victory, he gains a power like no other—Acceleration, allowing him to bend time itself. Armed with this ability and an evolving gun, he carves his path through war, politics, and abyssal horrors… rising from nothing to become the fastest lord of the apocalypse....want more chapters?help this book reach 50 Gt or 200 power stones for additional one chapter daily..........

Roan transmigrated as an FBI investigator.Several years later, a journalist interviewed the world-renowned detective Roan Greenwood and asked,“What made you persist in solving cases for so many years?”Roan tilted his head and glanced at the sports car beside him, the villa behind him, and the beautiful woman inside the villa. He smiled slightly and said,“Well, the bonus after solving the case.”“What?”

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.

[R18 novel with a lot of sexual content]Artem never expected to take on the role of a villain, let alone transmigrate between harem novels. Bound by a system, his task is clear: steal the heroines from all the protagonists’. From Chinese Cultivation and Korean Gate to Japanese Isekai Fantasy, VRMMORPG, and beyond—no heroine is off-limits, and no protagonist is safe!