Online Game: Starting With SSS-Ranked Summons - Chapter 410: Accepting the offer

He, without doubt hates her.
What did she do to deserve his hate?
The person who she treated well like a brother did not even bother to notice it...

Years passed…

He needs to get married.
He needed a wife.
So she offered herself.
It was a marriage that will benefit both parties he said.

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.

Following an untimely death, Kin is reborn in a world completely different from our own. A world of Magic, Monsters, and fearsome Beasts.‘No way…’ Kin thought to himself upon noticing his skin color.He had been Reborn on the other side, on the Monster side, as a Goblin.‘Am I going to have to leave my life in this cave? Surrounded by other Goblins?’Thankfully, he wasn’t just any normal Goblin.[System initializing…][Congratulations!][You have been Blessed with an SSS-Rank Skill!][You have been Blessed with the SSS-Rank Skill “Palm of the Devourer”!][You have been Blessed with a Legendary-Grade Title!][You have been Blessed with the Legendary-Grade Title “Evolving Monster”!]With a palm that can devour, absorb, and assimilate dead creatures, the Rise of the Evolving Monster starts!‘The Goblins that left earlier are back. They captured a woman. Wait… Those ears… And a tail?’A life of blood-pumping adventure, unimaginable riches, unmatched strength, and heavenly beauties starts!

There’s the so called class transfer.

Among the high school students that were given cheat abilities, Kirishima Ran was given 『Underling Training』for some reason, a skill that can make a woman a slave.

Ran who was driven out by the kingdom using an absurd reason will make use of the given skill freely to take revenge on his classmates, release his desires (This is mainly the reason), and fight off the world’s system.

It’s a story of him using his wonderful skill making his classmates turn to an obedient cute and lewd slave.