Diary of a Masochist's turning into a Human Toilet - Chapter 35: EP. Rest (18+)

Traveling to Los Angeles in the 1990s, Roland Allen, who had been beaten by society, thought that he would live an ordinary life in this life, but just when he was about to change careers, reincarnation began——

The number of roles is all determined by default, so they are all related households everywhere?

Sorry, as long as the hoe is swung well, there is no corner that cannot be dug.

- Description from novelbuddy

The most famous deed of this princess was her words to her younger brother Liu Ziye.

When he became emperor, she told him, “Although your highness and I are of different sexes, we are the children of the same father. Why can you sleep with so many different women, while I must be only with my husband? This is so unfair!”

And after the Emperor Liu Ziye heard his elder sister’s words, he ridiculously thought it made sense. So he immediately corrected his “wrong ways” and painstakingly selected thirty handsome youths for her to enjoy.

Chu Yu awoke in the princess’s body and realized that she had obtained a male harem of three thousand; should she take just one to drink, or keep all of them?

- Description from Novelupdates

I became the fiancé of the tyrant male lead, a character who becomes a villainess because she was obsessed with the beautiful tyrant.

Of course, in the end, she was killed by the tyrant.

Still, this all happened before the original story began.

After diligently performing a dozen or so actions that would cause me to be dumped by him, I succeeded in becoming a sound friend of the tyrant, who turned out better than I had thought.

“How was it?” asked the female lead, who he saw for the first time.

“Hmm?”

“I meant your meeting with Miss Diel (female lead), Your Majesty.”

He tilted his head slightly. Hey, don’t pretend you aren’t interested.

It is said that he fell in love at first sight, but I saw it all.

Hehe. I chuckled and poked his arm with my finger.

“You know what? Please let me know if you have someone you like.”

“Why? So you can kill her?”

Heh, do you think I’m like you?

I smiled sincerely and answered him. “Well, I’ll break off our engagement at the right time.”

“Miss.”

The smile on his face disappeared in an instant.

I somehow became speechless after my gaze met his glaring eyes.

He stared at me and laughed quietly in a slightly husky voice. In a subdued voice, he then said, “Don’t make a joke like that.”

His hand stealthily and gently brushed off the strand of hair on my cheek.

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.