Fein created this martial art technique because an idea inspired him to create a technique that would allow him to injure a person internally. It was for ability users that have a tough defense. So the technique principle that he used is similar to the Hyuga Clan's Gentle Fist.
Fein named the technique Fist of Gentleness. It's a technique that targets the acupuncture points of the body and infuses it with a slight amount of Degu. The infused degu energy would conflict with the opponent's energy, causing a disruption that would ultimately injure that target's internal organs.
