Junkinken

Junkinken (純金拳, Solid Gold Fist) is an advanced  technique.

Usage
The Junkinken is a Hakuda technique employed by Shinigami. The basis of the technique is centered around the execution of a physical blow with immense speed. The speed is coupled with immense force. Unlike many Hakuda techniques, however, this technique is not meant for making contact with a target; instead, the immense speed and force from the Junkinken blow creates powerful blast of pressurized air, causing crushing damage to the target. A single blow from this technique is usually enough to finish off even targets of Captain-level strength, however, for particularly stubborn opponents, the technique can be used in rapid succession, piling the damage onto the target for an almost-assured kill.

Trivia

 * In essence, the technique gets its basis in the Sekizō technique used by Might Guy after entering the Eight Gates Released Formation.