|Overpressure Force Field|
|Primary caster||Armed Force mages|
|Japanese name||強装結界 |
|First app.||A's (ep.4)|
Kyōsō in its spell name means that the force field's effect will be (synergically) increased when co-cast by multiple casters.
In A's (ep.4-5), the Administrative Bureau Armed Force mages use it to imprison Vita and Zafira. In order to help them, Signum enters through the force field with Purple Lightning Flash. Shamal, staying outside the field, comments that it can only be broken by Signum's "Falken" or Vita's "Gigant-level" mana (e.g. Gigantschlag). It is eventually destroyed by Shamal's Thunder of Destruction after Chrono Harlaown and one of the Masked Men show up.