Mushoku Tensei (WN) - Volume 12

After being reborn, Bella Green is determined to punish the scum, slap faces, and sing her way to the pinnacle of life. However, she is accidentally picked up by the person she least wants to see and taken home as a cheap 'brother.'Faced with the naughty yet particularly disobedient little Demon King, Mason Bennett sternly instructs: “No fighting, no skipping class, no dating!”One day, the little Demon King shows up on television in a stunning long dress, and Mason Bennett is furious, immediately tying her up and bringing her home for an in-depth lesson!!Looking at her suitors who were beaten up and unable to take care of themselves, Bella's eye twitches, what about the promise of no fighting?Being forcibly dragged out of the classroom and carried home by a certain jealous king while attending class, what about the promise of no skipping classes?Finally coaxed and deceived into the civil affairs bureau, Bella teared up, damn it, what about the promise of no dating!!!

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.

After a well-lived life on Earth, Kael never expected anything more than death and the sweet embrace of sleep and darkness.But fate had other plans. He was reborn in another world similar to Earth, where he grew up until he was ten, at which point his memories from his past life were reawakened.He was an old man trapped in a boy's body, but the mixture of the child's memories with his own made him feel more middle-aged than old.A few days later, the world he was in ascended into the realm of war, the battleground of all living beings. Kael was among the few awakened who had the chance to become the ultimate god of existence, based on the orbs of different paths presented before him.Kael was faced with three choices:Orb of ChaosOrb of NothingnessOrb of Void(Choosing any will make you undergo a trial that will change your very existence. Please choose wisely.)While in shock by these options and seriously pondering which one to choose, an unexpected event occurred.(Error detected... A new option has been created)(Be the wielder of the three — Chaos, Void, and Nothingness)(Answer picked by host, transporting...)Kael was in shock as he fell into darkness, with one swirling thought in his mind:“I didn't even pick any.”

As a human, I should be miles away from any large shifter event. Especially the annual Mate Hunt.A hunt for mates. Doesn't that sound barbaric? Yeah, it's as bad as it sounds.Several packs in the area gather as their newly minted adult wolves shift. Females are let into the woods first and are given an hour's head start, just before sundown. Then it's time for the males, ostensibly thrown out to hunt down the scent of their fated (or chosen) mates.It isn't an event for the faint of heart, and it's definitely no place for someone who can't shift. So why the fuck am I here, running my little human heart out, chased by what sounds like an entire pack of wolves? Great question. I don't know, either.But I'm here.Surrounded by howls fueled by the thrill of the hunt.Feet bleeding. Lungs freezing.I am so fucked.----R18. Dark themes, including but not limited to: Murder, attempted murder, a stack of dead bodies, betrayal, mild sociopathy, an ML who appears to bathe in red flags despite his favorite color being green, an unwarranted hatred of blueberry muffins, and pillow thievery.