The Invincible Iron Fold is the first full-length story in the Marvel Origami Universe, written by Superfolder Noah and released on June 23rd, 2018. It introduces the main character of the MOU, Clark Largent, and details his origin as Iron Fold. Its direct sequel is The Imperfect Iron Fold.
The war between Kirby High School and Wheeler Academy is only getting worse, so the school organization F.O.L.D. believes that it's time for the OrigAvengers to return. To do so, F.O.L.D. tries to recruit the Clark Largent as the Invincible Iron Fold. The only problem; Clark doesn't want to be a hero.