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

Sherly was dumbfounded. She had expected him to come up with something. To think that Leo would give up thinking so easily was surprising.

She didn't take him as a person who would choose fighting as the first choice. If she had known, she wouldn't have bothered to call Jack and his team to help with the evacuation.

But the more surprising thing was how the Wandering Sword Saint could lose. She thought that he would kill the young boy easily and end everything.

Leo glanced at her for the last time before he moved his Qi. Electricity exploded in the air and thunder crackled around him, forming a lightning storm. His hair turned white and he dashed toward the young boy.

"Hey, brat!" Leo's voice was loud enough to reach the ears of the boy, who stopped in his tracks and turned to him. "Let's have a fight!"

Chapter 199 – Too Strong