Legend of the Great Sage - Chapter 5 - Nine Oxen and Two Tigers

When she stands, she’s like a white peony. When she sits, she’s like a tree peony. When she walks, she’s like a lily flower. And when you look her in the eyes, she’s like the Great King of Terror.

Despite having the qualities to be a peerless bishoujo, because of the look of her eyes and that atmosphere of hers, she’s feared by others; such a girl is forcefully sent to another world.

Being told that she would be granted a wish as a special favour, the girl made a wish────

“Make my eyes and atmosphere normal please.”

This is a story recounting the lifestyle in a parallel world of a girl who would be perfect (probably) if just her one weakpoint was overcome.

A fantasy comedy with magic, dungeons, and a hero and demon king(candidate) who she gets tangled up with.

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.

Klein’s greatest wish is to transmigrate to another world and live life in an isekai, just like in anime, manga and novels. However, fate is on his side and the typical truck that the main characters always carry in isekai runs over Klein. But, to his bad luck, he lived a few more days in the hospital and, just on the day he died, Klein heard a ⟨⟨-DING-⟩⟩ that he knew it meant. That was the day of his death, but also the beginning of his adventure into another world.

Monsters appear frequently, instances are everywhere!When various classes shine brightly, Li Haotian awakens to what everyone considers the most useless Illusion God class—the Mechanic!But what others don't know is that Li Haotian's Mechanic can unlock a special talent every ten levels![Unlimited Ammo]When others are cautiously navigating instances, Li Haotian is already surrounded by countless Superpower Mechanical creations—Gatling guns, Rocket Cannons, bombers, Wolverines, Terminators, intercontinental missiles, Aircraft Carriers...and, unlimited ammo![God's Eye View]While others are carefully exploring the enemy's situation, Li Haotian is eating hotpot and watching the enemy gradually fall into the encirclement of the superpower army, grinning.[Air Drop Support]When the enemy is playing outdated tactics like blitzkrieg and encircling points to reinforce, Li Haotian remains calm, pointing to the sky—the superpower army instantly descends thousands of miles away, covering the skies of Sakura Country!Abyss Dungeon, Slaughter Dungeon, large group instances, international war instances... Li Haotian sneers and goes alone.Because, I alone, can rival a million troops!