Amenosubaruboshinomikoto: Gyokkō

The user extends their arm outward at the target with an open palm. A purple energy burst in then unleashed in a variety of ways, including a powerful shockwave or a ball of great concussive force.

Trivia

 * This technique references the tale of Urashima Tarō, Urashiki's namesake. In the story, Urashima rescues a turtle and is rewarded for his kindness with a trip to "Ryūgū-jō", the underwater Dragon Palace, home of the dragon kami of the sea. Upon returning home, he is gifted a "jeweled box" and warned not to open it.

 Les Pléiades du Cosmos - Alioth pl:Amenosubaruboshinomikoto: Gyokkō