Mysterious Peacock Method

The Mysterious Peacock Method is a trademark technique of Hoshigakure and utilises chakra-enhancing radiation produced by a meteorite that fell 200 years prior to the start of the series.

Usage
The technique itself manifests in the form of a feather-shaped array behind the Hoshigakure ninja and spreading out from behind them like a peacock's tail feathers, hence the name. This chakra is easily manipulated into various shapes to create techniques, making it one of the most versatile jutsu around. These techniques are honed through Star Training, which requires the ninja to spend large amounts of time focusing on their chakra and meditating in the presence of the meteorite.

Drawbacks
The meteorite's radiation greatly improves the user's chakra, but is incredibly damaging to their physical body. The body of anyone attempting to master the technique would eventually weaken and die, and even those who do master it perish. This led the Third Hoshikage to ban the training. With the meteor's destruction after Akahoshi's defeat, the training became lost forever.

While most Hoshigakure ninja do not seem to show much damage from the technique, at least three (including Sumaru's father, Hotarubi, who dies from extensive exposure), show severe physical trauma.

Trivia

 * When Akahoshi implanted the meteorite into himself, a spectral dragon was formed. However, this may not be a true technique, as Akahoshi was under control of the meteorite and did not form the dragon himself.

Método Misterioso del Pavo Real