A Female Forensic Doctor Transmigrates into a Book as the Female Supporting Character - Chapter 400 - : Illegal

After being given up on by his family because his dantian was destroyed, Soh Woonhwi was kidnapped by the Blood Cult and lived as a third-rate spy.

One day, he died while being used to find a legendary sword immortal’s secret records. However, he returned to the day he was kidnapped ten years ago and obtained a mysterious ability that allowed him to hear the voice of swords.

I fell into a wannabe murim.But apparently martial arts is supposed to be difficult?Hm… Is it really that bad?

[SoL Heavy][Ding! SSS-Rank Service System Activated!][Ding! Daily 10x Reward Multiplier Initialized!][Ding! Job Gained: Junior Sanitary Engineer!]Reincarnated as Dorian in a fantasy world, a PhD student in Business and Marketing decides to become the richest man alive with the help of a system and also improve his new world's economy.Dory doesn’t need a sword to win. With his SSS-Rank Service System, he treats every small job like a big business deal. His 10x Reward Multiplier turns simple work into a mountain of money and gold.[Ding! Skill: Material Restoration Acquired!][Ding! Skill: Spatial Optimization Acquired!]He can make old, rusted tools look brand new. He can organize a messy shop so it works faster and better. He is bringing modern skills to a world that is dirty and slow. Whether it is a broken house, a messy warehouse, or a poor kingdom...Hire him to fix anything and everything! Cause he has an SSS-Rank Service System!**********What to expect:Very Slice of Life: A chill story about doing a good job and growing a business.Low Stakes: No big scary battles. Just fun, work, and making money.Smart MC: A PhD student using modern ideas to fix a fantasy world.Modern Jobs: Using modern professional skills to change the world.Road to Riches: A slow and happy story about becoming the wealthiest man alive.Harem: A focus on romance and relationships (No Smut, No Yuri, No NTR).

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.