Aerial Blade

Aerial Blade (大気圧縮断裂) is a Spiritual Magic used by Treyni.

Abilities
Treyni summons and unifies with Sylphide, and creates multiple sharp "blades" out of wind.

Trivia

 * In That Time I Got Reincarnated as a Slime: Isekai Memories, the "Treyni [Budding of Deep Green]" unit uses this as a Secret Skill.
 * In that same game, the "Trya [Summer Breeze of Benevolence]" unit uses a similar Secret Skill called Aerial Slicer (大気奏爛刃).