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

Gathering her Qi around her, she created a barrier to stop the dark Qi. It was a thin layer of ice that stopped the mist from moving any further.

Qi acted like an oil and water against each other. They didn't mix well, and it was near impossible for dark Qi to get past Anya's barrier unless she wanted to mix it.

Thankfully, Head's body had stopped expanding. She couldn't get bigger as she was already a big ball of flesh. Following that, red lines formed on her body, indicating that she was ready to explode.

Anya rushed toward Head's body and pushed her ice barrier with all her strength. It was a little hard as the dark Qi was corroding it, but she had no choice. She gathered all her strength and was ready to punch it.

Chapter 190 – Victory and Next Move