Help! I unknowingly enrolled myself into a supernatural Academy - Chapter 42: I will sue you

Ophelia von Aubessec, an Empress ruling over millions gets slain.Regressing back to her body 300 years ago, she sets her sights on getting revenge on the forces who had managed to kill her.By using her knowledge of the future, she builds her own Empire, wins back the lovers she lost, and discovers the secrets of the system she had been provided.---------This is a dark novel and IT IS HAREM. However, it may travel more into a polygamous relationship due to the complications of a harem.There are also R18 scenes sprinkled about, so please read responsibly.

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.

Anna Watson’s life was far from easy. A battle with cancer left her frail, defeated, and questioning her life’s meaning. Her final moments were filled with regret for dreams unrealized and paths untaken. But when death embraced her, it wasn’t the end—she awakened in an entirely new world: the wizarding world of Harry Potter. Yet, this wasn’t the familiar era of Harry, Ron, and Hermione. She found herself in the time of the Marauders, a generation before the golden trio.Even more shocking, Anna had a new identity: Petunia Evans, the famously non-magical, bitter sister of Lily Potter. But this Petunia is different. Born as Lily's twin, Anna retains her memories of her past life and discovers she has magic—a shocking divergence from the character she once read about. Her magical abilities open up opportunities and challenges, not only for her but for her relationship with Lily, her new family, and the unfolding story of the wizarding world.As Anna navigates Hogwarts alongside the Marauders, Severus Snape, and her own twin, she realizes that the story she once knew is shifting. Her choices ripple across timelines, altering destinies and alliances. Struggling to reconcile her knowledge of the future with her growing affection for this new life, Anna must decide: should she preserve the world’s fate or carve out a new destiny for herself and those she loves?In this thrilling twist on the Harry Potter universe, the story explores themes of second chances, sibling bonds, and the weight of choice, painting a vivid and detailed picture of what might have been if Petunia Evans had the magic to change it all.

A 20-years old boy transmigrated into the female-dominated novel world, But not as a protagonist nor as the main villain.

He transmigrated as the green tea boyfriend of the main female CEO heroine and will become the first target of the protagonist of this novel. Alex was scared for his life. In the novel, it's impossible to defeat the son of luck.

When he was helpless, the golden finger exclusive for travelers came.

[Ding! The Female Raider System is being loaded.]

Alex was excited thinking that he doesn't need to go close to a high cold female CEO but the system tells him different things.

[Ding! As long as the host raids the heroines and increases their affection, the Host will receive heaven-defying rewards.]

So his journey as green tea/White lotus raiding began.