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. Even for those who master the technique, there is still a high chance that their body will slowly weaken and eventually perish. This led the Third Hoshikage to ban the training. With the meteor's destruction after Akahoshi's defeat, the training became lost forever.

At least three people (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 Kujaku Myōhō