«Cyclone» is activated by the user holding their sword with both hands at the right of their waist. The skill is a two-handed spinning sword slash that consists of a single upwards diagonal slash from right to left with two hands holding the sword.
|Volume 10, Chapter 4, Part 1||Sortiliena Serlut used the skill in her training with Kirito.|
|Volume 10, Chapter 4, Part 6||Sortiliena used the skill to defeat Uolo Levanteinn in their graduation match.|
|Volume 11, Chapter 5||Kirito used the skill to counter Raios Antinous's Avalanche and cut off his arms.|
- Although the skill is a one-hit skill, if used against Avalanche properly, the skill can be deflected in a way that the sword returns to its original location, causing the skill to reactivate and thus create a second hit.