A strange fire recorded in the Shin Otogi Bōko 新御伽婢子 (1683), which appeared on the grounds of Mibudera 壬生寺, a temple in Kyoto. It was considered the condemned spirit of Sōgen 宗玄, a wicked monk of the temple's Jizō hall, who had stolen offerings of money and oil.

In the Gazu Hyakki Yakō it appears with the following caption:

洛外西院の南、壬生寺のほとりにあり。俗これを朱雀の宗源火といふ
South of Sai-in outside the capital, it exists near Mibudera.
Customarily it is called sōgenbi of the Vermilion Bird.

Sai-in was a villa of Emperor Junna's, and the Vermilion Bird is a Chinese constellation of the southern sky.