A false confession manhwa novel is interesting because it plays with your expectations. You think you know what's going on based on the confession, but then things start to unravel and reveal a much more complex story. The element of surprise and the exploration of truth make it compelling.
First, you need to have a great story idea. Then, do some research on the style and format of manhwa to get a sense of what works. Sketch out your characters and plan the plot.
You might start by looking at bestseller lists in the genre related to the manhwa. Or, check out novels by authors who have a similar writing style or approach to storytelling as the manhwa creator. Another idea is to browse reviews on book websites to find novels that match your preferences based on the manhwa.
You can start by finding some popular manhwa novel platforms like Webtoon or Lezhin Comics. Sign up on these platforms if required. Then, you can browse through their manhwa novel sections. Look for titles that seem interesting based on the cover art or the short description provided. You can also ask for recommendations from friends who are into manhwa novels.