Shinobi (Ninja) hand symbols of power. In the realm of ancient Japanese mysticism and martial arts, ninjas were legendary figures known for their stealth, agility, and mastery of the Kuji-in, a mystical practice that involved nine symbolic hand seals and the Kuji Kiri, the Nine Cuts. These hand seals were believed to harness the power of nature and the universe, unlocking various mystical abilities and enhancing the ninja's physical and mental prowess. | Ninja Flash Bombs

Scientific study from Japan proves ninja hand gestures sharpen the mind and reduce stress

How to Learn Ninja Techniques