@gringo sama The original novel named "Nano Machine" ends on a massive cliffhanger with no resolution to anything, very abruptly. The author wrote a second novel, called Descent of the Demon G**, as a direct sequel to Nano Machine, which starts where the original ended and actually completes the plot and solves all the loose ends.
I don't know if the manhwa will follow the same route or it will continue the story properly under the same name. If they are going to finish the story properly, there should be at least a 100 more chapters. The second novel is a lot shorter than the first, so...