ShuviLily

After putting a suggestion to add a mercenary in a bad Murim novel he read, Leo would finish a mission with his NPCs before sleeping. 
Or so he planned.

For some reason, he was transported into the said novel as the extra mercenary added by the author. His loyal NPCs, a yandere secretary, a happy-go-lucky assassin, a sexy puppeteer, and two weapon maniac guys start to become sentient.

He lead his mercenary band 'Hallowed Insects' toward an an unprecedented future in a Murim most turbulent era while enjoying his time.

Fortunately, they still have their futuristic equipment with them. Tang Clan have a Poison Dagger, they have a Photon Sword. Shaolin Sect has a Qi Blast, they have a Railgun.

And of course...

"How much are you willing to pay to employ us? By the way, Demon Sect pay us 50,000 Golds to join their side in the upcoming war."

... he always sided with the highest bidder.
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Warning: Story with R18 element

Mercenary Harem in Murim Novel

The Elders didn't hesitate and grabbed Leo's hand. He pulled them up and they climbed the ladder. A total of 6 Elders were rescued, and they sat weakly on the dock.

"Chiaki, get out of here quickly. The enemies are coming." Leo said to the girl who was piloting the vehicle.

The vehicle moved away from the explosion and shot toward the sky. It was fast and agile, and no one could follow it. In 2 seconds, it pierced through the cloud and disappeared from everyone's sight.

"Ah, I didn't know that vehicle could fly. What kind of technology did you use?"

"A secret." Chiaki answered with a cold face. She put the aircraft into an autopilot mode and rose from her seat, approaching the Elders. "More importantly, give me your blood. Put it in this tube and make sure it reaches the line. Don't ask any question if you want to be cured."

She gave them a tube and a needle. She also gave them a small bottle with a green liquid inside.

Chapter 185 – Doing His Part