Isekai de Kojiin wo Hiraitakedo, Nazeka Darehitori Sudatou to Shinai Ken (WN) - Chapter 97: (Hero Miyamoto’s volume) Adventure to the call of the holy sword with reliable friends.

“If I told you about the darkness inside of me, would you still look at me like I'm the Sun?”******Annalise's life changed the very night she was married off to the Dark Lords who resided in the Cursed Castle. She was offered to them as a sacrifice to save their Empire.No one knew anything about those residing inside the Cursed Castle except that there were three of them, all men, and they all were very powerful.There was a dark force invading the peaceful lives of the people of Seelie Empire, people were disappearing and unseen things were happening. And the High Priestess confirmed that the Seelie Realm would need the help from the Dark Lords to win this battle against the unknown.Annalise ended up becoming the pawn as the only unmarried girl with royal lineage and the title of a Princess. To show their sincerity about the treaty, the royal family offered her hand in marriage to the Dark Lords, and to everyone's surprise, the Lords agreed. But they had a condition - she needed to marry all three of them!To save her Empire and people, Annalise agreed to marry all three Lords only to find that none of them showed up at the wedding.How was Annalise going to handle her married life, and her three husbands who were not only handsome beyond words but also more powerful and mysterious than people thought? Especially when they had a great battle to fight!

On the wedding night, when the bride hung herself, the handsome husband was sickly, the concubine was glaring like a tiger to see what her best next move would be. Shu Huan who time-travelled to the ancient times encountered such a mess.

“Men and women can’t touch each other. You doing this is not right, right?”

“Humph, you are already married to me. You still care about that?”

“Eh eh, second young master, you haven’t healed yet. I’m thinking for your own good.”

“Doesn’t matter, this young master isn’t interested in your bean sprouts like body.”

While sleeping, they put a barrier of pillows between them

Woman: “Eh…Eh….”

Man: “Eh…what are you doing?

Woman: “Don’t cross the line.”

Man: “Ah……?”

Woman: “If you cross the line, I’ll hit you with the incense burner.”

Man “Uh……”

Woman: If……if I accidentally cross the line……you don’t…”

“Humph……if you continue to talk, I’ll tear your clothes and seal your mouth.”

“You check so carefully because you are afraid that I’ll harm you?”

“That isn’t it. Humph, I only want to know why someone will commit suicide by hanging on the wedding night.”

“……”

“You hate me so much? You prefer to die instead of spending the wedding night with me?

- Description from Novelupdates

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.

The top alpha, Major General Ji Cheying, disguises himself as a down-on-his-luck beta in order to carry out a secret mission. One day, when he goes out to take out the garbage, while wearing a pair of torn socks, he comes across the poor nephew of his landlord, Xie Quan, a good-looking beta who was staying in the dirty and terrible basement.

The two look at each other, each feeling a little sorry for the other.

No one expected that one of these two miserable people was the prestigious Major General Ji and the other was the most powerful mecha engineer in the Empire. And to Ji Cheying’s further surprise, this beautiful beta confessed his passionate love for him!

He was torn again and again under the prudent choice to refuse the other, after all, this is a mission, not the time to talk about love.

When the mission was over and it was time to talk about love, it was Xie Quan’s turn to become baffled, “Who do you think likes you? Who confessed? I didn’t, I’m not, don’t talk nonsense.”

Ji Cheying: ???!

It was only then that Xie Quan unexpectedly realized that the Imperial Major General seemed to have mistakenly thought that he was in love with him.

A few months later, Major General Ji, who had entered his susceptible period, was violent and fierce, not able to be approached by strangers. However, his eyes were red and he was tugging at Xie Quan, his voice hoarse, “You little liar, cheating on my feelings and not taking responsibility.”

Xie Quan sighed, lifted his hair, and tore off the invisible gland patch, finally revealing the omega gland at the back of his neck, “Bite it. I’ll give you a bite.”

Ji Cheying gritted his teeth, “You’re a f*cking omega?”

True love has nothing to do with identity and gender.

- Description from Novelupdates