Bōgyo Kekkai (Japanese: 防御結界ぼうぎょけっかい Romaji: bōgyo kekkai, translated as Protection Barrier) is basically a more powerful white magic version of the Windy Shield. It seems that this is not the name of the spell, but merely a common way to name any powerful protection barrier. This spell can protect the caster from almost any kind of attack, even the Blast Bomb, for instance. It drains the caster's pool capacity considerably, however, so it cannot be cast repeatedly in a battle.