Windstorm
Windstorm is a Dual Swords active skill that spins and slices all around the user. The listed move is restricted to High Stance.
How it works
The skills table identifies Windstorm as a Dual Swords active skill and describes it as a spinning attack that slices all around you. It is marked High Stance only. The table lists Windstorm II as a separate skill that increases the strength of the wind generated by Windstorm.
When it helps
Consider Windstorm if you use Dual Swords and want a High Stance move that attacks around you. Its listed stance restriction matters when choosing which moves to use in a particular stance.
The tradeoff
Windstorm is limited to High Stance, so it is unavailable while using the other stances.
Your next step
Check the Dual Swords tree for Windstorm and Windstorm II, then review their commands in Skill Customization.
Read the supporting references
A reference to Nioh 2’s stances, skills, Yokai abilities, Jutsu, and stat progression. The supplied wiki passages do not identify a verified patch, so version-specific behavior and recommendations are not confirmed as current. Guidance explains the referenced mechanics; it is not a tested damage ranking. Check the stated edition and source version before applying a patch-specific detail.