Hokeiun

Cloud Shocking Step (歩驚雲, Hokeiun), is a signature technique of the Fuyuki Clan which allows the user to literally walk in the air by stepping the air molecules. The technique is more commonly known and named as Air Walking (空中歩行, Kūchū Hokō) by the outsiders.

Overview
While the technique itself may look simple and worthless, it is actually an incredibly versatile and valuable technique.

Traveling in the air opens countless possibilities to make a difference in a war. For instance, walking in the air allows the user to bypass defensive structure like wall or river and traps. It also grants the user the ability to observe the surrounding easily. It is not only a good technique to have for fighting but also for assassination, reconnaissance, infiltration and also escaping.

Back in the days when technology was still in its infancy stage, this ability and its equivalents were highly regarded and sought after. In fact, the neighbors of Land of Bush had tried countless times in vain to recruit Fuyuki Clan with title, land and money.

Trivia

 * The technique is named after the protagonist of Fung Wan.