My Ultimate Life-Stealing System Made Me Invincible - Chapter 46: Out of Money.

Lu Zhiguang is not a cannon fodder himself, but his mission is to save the miserable cannon fodder.

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

A little ruffian who fought recklessly without any morals and bottomline accidentally time-traveled to parallel space and became a Key Case Investigation Team agent. The huge change in identity had him creating chaos in the police station. However, a strange miracle system helped him repeatedly solve mysterious cases, turning him into an impudent ruffian detective!

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.