Sōgenbi

Sōgenbi 叢原火
Sōgenbi (叢原火), the “Flame of the Thicket,” is a haunting apparition from the temples of Kyoto—the floating, flaming head of a greedy monk who is condemned to drift forever as a warning against religious corruption.
Meaning and Origin
The name is derived from Sōgen (the name of the monk) and Bi (火 - fire). It translates to “Sōgen’s Fire” or “Fire of the Thicket.”
Its origin is rooted in the history of the Mibudera Temple in Kyoto. Legend says that during the mid-13th century, a monk named Sōgen committed the ultimate sacrilege: he habitually stole the small coins left as offerings by poor peasants and, even worse, stole the precious lamp oil from the temple’s sacred altars to sell it for a profit. Because he stole “the light of the Buddha” to fulfill his own greed, his soul was denied entry to the afterlife and was transformed into a Hi-no-Tama (fireball) after his death.
Characteristics
Sōgenbi appears as a sphere of pale blue or reddish-orange fire, about the size of a human head. Inside the flames, the agonizing face of an old, bald monk can be seen, his eyes wide with regret and his mouth frozen in a silent cry for help.
Its primary characteristic is its Oiling Presence. It is often seen drifting near temple ruins or cemeteries where lamp oil was once used. Villagers in old Kyoto reported that whenever the Sōgenbi appeared, the air would fill with the faint, cloying smell of rancid vegetable oil. It is said to be a Silent Haunter, rarely making a sound other than the crackle of its own spectral flames as it searches for the offerings it can no longer spend.
Legends
The legend is a classic Cautionary Tale for those in positions of spiritual authority. It is said that for centuries after Sōgen’s death, his flame would appear in the fields near Mibudera whenever a new monk was tempted by greed.
One local legend tells of a young apprentice who found a bag of gold and considered keeping it for himself. That night, as he crossed a field, he was followed by a floating head that glowed with a sickly light. When the boy looked into the fire, he saw the face of Sōgenbi and realized that the “fire of greed” would eventually consume his own soul. Terrified, he returned the gold the next morning. To this day, the Sōgenbi remains a symbol that those who steal from the gods will find that the only thing they have left to burn is themselves.