- "This isn't an ordinary barrier. There are only five users of this technique in the world. It manipulates time and space to completely nullify any physical attack. No matter how strong, they cannot break through. Haha... Have you realized that you have no way of winning?" - Kraken
The Aqua Pentagon is a special water-based technique used by Kraken, Undine, Erubetie, and two others. This skill forms an aquatic barrier that apparently manipulates the fabric of time and space to reflect all physical attacks and render them worthless.
The only known skill able to completely shatter the Aqua Pentagon is Luka's angelic skill Flash Kill, a sword slash that also uses time and space.