Volcanic Ball

{{nihongo|Volcanic Ball|{{Ruby|噴出球体（ボルカニックボール） |Funshutsu Kyūtai (Borukanikku Bōru)|lit. "Eruption Sphere"}} is an esper ability, a variant of Aero Hand, which allows the user to gather air currents into a sphere, as well as strengthening and releasing them.

Principles
Volcanic Ball allows the user to gather air currents into a sphere in the palm of their hand. Within the sphere, the air currents can be compressed and strengthened before being released all at once. The Tobio sisters, both users of this ability, have both used the explosive release of air from the sphere to propel themselves over long distances. Yumi has also used it to create a spherical shield around herself, while Mami, who has displayed greater proficiency and duration with the ability, can use the compressed air currents like a cannon.

Known Users

 * Tobio Yumi
 * Tobio Mami