One Piece: The Devil Fruit Collector - Chapter 33: Let Me Show You... The Gap in Our Abilities! (BAM!)

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 happiest thing in the world is to be able to amend what you have done wrong. She who acted willfully because of a game, was reincarnated into a time when she still had her parents’ love.

*WSA Entry****Alex, born into the illustrious and undeniably gifted Blackwood family, was a stark anomaly. While his siblings excelled in everything from music to sports, h e was a blank canvas, utterly talentless. This ostracized him, making him a target for his family's disdain and bullying from his classmates. Finding solace only in the world of anime, Alex retreated into his room, spending days in a state of squalor, fueled by ramen and the fantasy worlds on his screen.One day, while attempting to microwave a plastic container filled with ramen (because even basic kitchen skills were beyond him), the microwave exploded, turning Alex's room into a scene of hilarious destruction. Instead of dying tragically, he finds himself resurrected…in the anime he loved the most, “Swords and Sorcery,” a fantastical world brimming with magic and adventure.As Alex, now a fresh-faced young adventurer in this new world, he discovers he can wield the powers of any character from any anime he's ever watched. Suddenly, his days of being mocked for his lack of talent are a distant memory. He can summon the mystical powers of a powerful wizard, the strength of a legendary warrior, or the agility of a skilled ninja. He even discovers he can tap into the magical abilities of characters from lesser-known anime, like a charming witch from a forgotten shoujo series or a cunning strategist from a tactical mecha anime.Armed with his vast anime knowledge and newfound abilities, Kai embarks on a life of self-discovery and adventure. He'll navigate the complexities of this magical world, forge alliances with unlikely heroes, and face off against powerful foes, all while striving to prove his worth and overcome the trauma of his past. But as he dives deeper into this fantastical world, he'll face a new challenge: can he learn to be happy and find his place in this world, free from the shadow of his former life?***“HAHAHAHAHA! All those useless Isekai animes animes I watched was not for waste after all...Stupid old man! Why don't you laugh at this?”

Adeline Smith's life took a sudden and dangerous turn when her grandmother’s will named her as the sole heir to her massive fortune, leaving her uncle with nothing. But the rules that came with the inheritance only made her a target, as her uncles would stop at nothing to claim what they believed should have been theirs.When one of her uncle’s murderous schemes left her gravely wounded and on the edge of death, she was found by Enzo Laureati, an annoying, yet breathtakingly handsome man. What she did not know was that Enzo was no ordinary man—he was a vampire prince who had abandoned his world and royal duties to live among humans just for fun.The moment he saw Adeline, he knew she was his mate, as his heart that had remained dormant for hundreds of years suddenly began beating. But despite knowing what she meant to him, he felt no love or attachment toward her.Out of curiosity, Enzo saved Adeline’s life and proposed an unusual deal: he would become her fake fiancé, help her expose her uncles for trying to murder her, and secure her inheritance. But he didn't propose this deal because he wanted to help her, but because he was simply bored. Adeline agreed, unaware of the chaos that was about to come her way.At first, their partnership was nothing more than a random deal. Living with Enzo wasn’t easy, as he was infuriatingly confident, annoyingly flirty, and had a knack for driving her crazy with his nonchalant attitude.When Adeline finally discovers who Enzo truly is, will she see him as a monster or the man who had always protected her from her uncles? And will Enzo be able to embrace their mate bond, or will secrets tear them apart?(PS: I'm not sure if one would consider this novel slow burn, but the REAL romance between my MC and ML begins at chapter 74.) Thank you so much for supporting my book!