Ninja Blade
Easy mode
Die ten times.
QTE Easy mode
Miss the same QTE action ten times.
Moonlight sword
Collect all nine Moji. Then, go to Chapter 5, and enter the new cave to get the large sword and upgrade it.
Ninja Blade weapon
Successfully complete Chapter 8 to unlock the Ninja Blade.
Ninjitsu Protective Barrier
Successfully complete all missions on the Hard difficulty to unlock the Ninjitsu Protective Barrier.
Tsuinetanarunaifu (Twin Eternal Knives) weapon
Get an “A” rank in all chapters, then upgrade the dual swords to the maximum to unlock the Tsuinetanarunaifu (Twin Eternal Knives) weapon.
Seeing your character
Choose a very light color for your appearance in order to distinguish your character better from his background.