MTL - Face Slapping The Slag Gong System - Chapter 184 Who is behind him?

Yo, Hi! I’m Frank, I made a deal with a demon to pay me some money for receiving a guest for a few days every week.
I had no idea about what I have done.
On May 1st, Conan ‘the God of Death’ came to my house. I was forced to let him in and we get involved in a criminal case.
On May 8th, Bruce Wayne ‘Batman’ came to me. I was forced to follow him to fight crime.
On May 16th, Hannibal Lecter, The Silence of the Lambs, came to my home. I can only say that I really can’t stand my guests.

- Description from Novelupdates

I Transmigrated into that trashy novel?!After a strange incident, Alden Finn, a popular streamer and avid webnovel reader finds himself trapped in the body of a main character from a novel he had once labeled as being pure trash.The worst part? Even the main character in the novel seems to be doomed to fail.Now stuck in this world, Alden has to somehow figure out a way to change his fate.Can he survive in this world?And oh my... a shocking scene to behold.It seemed that lady luck was rather on his side.He unexpectedly awakens a rare, SSS-grade talent: the character merge system.With It, not only can he merge with any character he desires, but he can also copy their skills and attributes.Despite being armed with a limitless potential.Rewriting the story won't be easy.Will Alden be able to change the novel's plot and make it to the top, or will his inevitable doom be the first to catch up to him?

Kiyoshiro Takeda lived a life without purpose, drifting through his days with no direction. But one fateful moment changes everything. Now, he finds himself in a world unlike any he has ever known, given a role he never asked for. A new life, an unknown destiny, and a looming catastrophe that only he can prevent. But can someone who failed in his old life truly become the last hope?

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.