Ura no Oyama no o Kusari-sama no

Fuyuma and Yoshiya witness a strange luminous object at the shrine of the land god "Ochensama" in the nearby mountains.
Yoshiya is severely injured, but then he encounters an unusual phenomenon in which his wounds are quickly healed. It seems that Yoshiya's body has an abnormally enhanced healing ability.
When Yoshiya returned home, he was visited by a man named "Yanagawa," who claimed to be a public health official. Suspicious of Yanagawa's appearance, the two feel that something harmful to them is approaching, and they flee.
As they expected, Yanagawa seems to be chasing them...

Translated by novelgame’s automatic English translation