Soranaki

is a Rank SSS Yo-kai of the Wicked tribe.

Appearances

 * Yo-kai Watch Shadowside: Major Antagonist
 * Yo-kai Watch Forever Friends: Major Antagonist

Biology
Soranaki is a massive yo-kai that holds the appearance of a dark sun with a red eye in the center and is surrounded by a mass of purple clouds, it seems to be carrying a large spear-like weapon.

Yo-kai Watch Shadowside anime
According to Jaou Kaira, Soranaki is the Yo-kai responsible of spreading the "soranaki" virus, a virus capable of turning Yo-kai hostile by turning the wickedness inside their heart into power. Its first official debut was in SS014, being the voice that told Fukurou to keep fighting until his last breath, before turning him into Shinmagunjin Fukurou.

Something that looks to be a Soranaki virus agent appears in SS037, where it interrupts the confrontation between the Yo-kai Detective Agency, Shutendoji, and Douketsu. They easily defeat Douketsu and Shutendoji, but its defeated by Natsume, who uses her newly discovered powers to vanish it.

Yo-kai Watch: Forever Friends
Soranaki is described as a dormant entity that almost drove the entire Yo-kai race to extinction in the past, is the one responsible for transforming Shien into Maou Shien.

Name Origin
Soranaki could be translated as "Empty Sky" or "Sky Decease"

Origin
Legends of Soranaki were first brought up based on an interpretation that the sun is a yokai, as the saying "When the sun rises, the yokai vanish", could be interpreted as the sun is actually the most powerful yokai. Since this legend was created in the 21st century, there are no records of this yokai's folklore from ancient times.