The DramaNext guide
What Knowledge Is My Greatest Weapon is about
When a mysterious blight turns the world into lifeless crystal, a young woman awakens a sacred power to restore nature. After saving her trapped brother, she crosses paths with a guarded warrior on a secret quest. Together, they venture into forbidden ancient ruins to stop the spreading petrification.
It runs 43 short episodes on iDrama and leans on secret identity and romance tropes, with each episode ending on a hook.
Is it worth watching?
The draw here is waiting for the truth about who the lead really is to come out. On top of that: the push and pull between two leads who shouldn't work but do.
Plan on roughly 1–2 hours from the first episode to the finale.
How to watch it
Start from episode 1 below; autoplay takes you to the next episode when one ends, and nothing needs a sign-up. It was added to DramaNext on Oct 28, 2026.
