One Piece: Seaside System - Chapter 2: Marine Based -

Li Jing, who is unemployed in a first-tier city, obtains a system where enjoying life can double the amount of money spent.[Congratulations, host for spending two thousand yuan to enjoy gourmet food, positive emotion one star, return ten times the consumption amount of twenty thousand yuan.][Congratulations, host for spending fifty thousand yuan to stay in a luxury hotel, positive emotion two stars, return twenty times the consumption amount of one million yuan.][Congratulations, host for spending one hundred thousand yuan to enjoy the pleasure of purchasing luxury goods, positive emotion three stars, return...]By becoming wealthy through the system, Li Jing finally experiences the joy of life, luxurious spending, perfect service, and transcendent status, all of which make him deeply understand the power of money.Especially those once unattainable goddesses, due to Li Jing's improved economic level and upgraded social circles, wonderful and unforgettable stories centered around him occurred.In the top floor suite of the world's tallest building, Li Jing stands with a wine glass in front of the floor-to-ceiling window, overlooking the entire city, and sighs:“People without money are merely alive.People with money truly live.”

One day, Song Shuhang was suddenly added to a chat group with many seniors that suffered from chuuni disease. The people inside the group would call each other ‘Fellow Daoist’ and had all different kinds of titles: Palace Master, Cave Lord, True Monarch, Immortal Master, etc. And even the pet of the founder of the group that had run away from home was called ‘monster dog’. They would talk all day about pill refining, exploring ancient ruins, or share their experience on techniques.

However, after lurking inside the group for a while, he discovered that not all was what it seemed…

- Description from Novelupdates

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.

****EXTREMELY SMUTTY**CAUTION: CONTAINS ELEMENT OF TABOOA sudden heart-throb, a shattered climax—and 22-year-old shut-in Edward Hunt dies mid-masturbation, and transmigrated as the declining barons family's heir.From Lucien's birth he was left with childhood of starvation, his mother’s untimely death, and a desperate political situation which challenge his claim as the head of House Argrave and the baron's title.Now Possessing his body Edward was left with to deal with such mess.No sooner has Edward processed this cruel rebirth, an unfamiliar sound echo in his head:“WELCOME TO THE MILF EMPEROR SYSTEM.”Connecting....SuccessInitializing.......Success“FUCK THE MILFS AND GET STRONGER, CONQUER THE MILFS, CONQUER THE WORLD.From an Baron without wealth, failed to save its people, to the conquering the world just by fucking milfs.Read the novel to find out how he do it.MILF SYSTEM - TASK POINTS CHARTHandjob - 5 PointsBlowjob - 10 PointsSex - 50 PointsCreampie - 75 PointsThreesome - 100 PointsFoursome - 200 pointsSpank - 15 PointsAnal - 150 PointsOrgy - 500 pointsBDSM - 700 pointsNTR other people - 1000 points.A little slow-burn novel.