Shinobido Way of the Ninja. How to Duplicate Scroll's? read description 👇

To Duplicate Scroll's, first use Limitless Weapon Scroll and Double Jump Scroll. Then activate "Iron Stomach" secret code so he can eat the scroll. When you eat the scroll press Jump button twice to Double Jump to cancel eating animation at the same time Duplicating the Scroll. Note make sure your jump button is empty of item for easy doing.
Iron Stomach is unlocked after you finish the 3 story ending, Ichijo's Story, Sadame's Story and Akame's Story. You can see it at the main menu "Secrets"