A Love I Shouldn't Feel - Chapter 23 : Restless Night

He died on the wedding of the girl he had a crush on, after a long and successful career. After convincing Yama to send him back to the world, he decides to fix the areas in which his life went wrong. Realizing the lack of love and romance in his past life, he sets out to conquer the hearts of various women.

- Description from Novelupdates

Kim Taejune, wanted to be a “hero,” a “savior” to all the weak. After reading books about them, he too wanted to be one. Yet he lacked power, he didn't have any skills, and the command system everyone else had but one day, his dream will come true. His path leads him to encounter Yoon Harin a woman who after the death of her twin younger brother Yoon Jiho was transmigrated into his novel, “Calamity Hunter” the “god” of this world makes a deal with Yoon Harin to bring her brother back to life IF she can survive as a savior till the end.

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.

D-list celebrity Zhong Ruanxing had been embroiled in controversies over her sultry figure ever since her debut. Smear campaigns and malicious rumors clung to her like a shadow. Years of oppression from higher-ups and sabotage by rivals made it difficult for her to shake off her reputation as a femme fatale, severely hindering her career.

Song Jingxing, CEO of the prestigious Song Group, graduated top of his class and stirred up storms in the business world with his capabilities. An aloof presence at the pinnacle of power, his interpersonal relationships were a mess, with even family keeping their distance. People loathed his attitude.

A freak accident caused these two very different people to swap bodies.

What they thought would be an arduous ordeal turned out to be an unexpected boon. Each found they could easily resolve issues that had plagued the other.

The celebrity living the CEO’s daily life: Greeted his family affectionately, treated subordinates with care, gave employees benefits, complimented his secretary’s new hairstyle—starting the day with vigor!

The CEO as celebrity: Trampled over rivals, tore apart enemies, sent lawyers after antis. Whoever dared provoke him would die! The CEO was whipping the entertainment industry into shape!

Much later, netizens posted:

[Who is Zhong Ruanxing’s backer? Her resources are too good now. From nobody to A-lister, whose thighs did she hug to get here?]

Online influencers hurried to speculate about the magnate behind Zhong Ruanxing.

Until the famously aloof CEO of the Song Group responded: I’m pouring resources into my own girlfriend. Got a problem with that?