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

Usually, people die when their brain was destroyed, but Head was different. She had two brains.

Leo destroyed the other brain, which was located near her throat.

Even when it was destroyed, and the proof of its destruction was scattered all over the place, Head was still regenerating.

She couldn't die no matter what he did.

"Chiaki, how to kill her? There has to be a way."

"I am currently analyzing it, Leader. Please keep her in that place and keep attacking. Don't let her go back to the Capital or the enemy will use her body as a sacrifice to revive the Supreme Evil. I am trying to find a way to kill her without giving the enemy an advantage to use her."

Strangely, Chiaki's voice sounded nervous, as if she was struggling to find something. Leo decided to trust her and continue creating holes into Head's body without stopping.

Chapter 195 – Method to End All