A Dutch-Portuguese trader named Fernam Visser decided to live in japan, in the Nagasaki prefecture while on a trading venture. He bought a house on the water and, desiring a family, bought out a geisha from the local imekura. Her name was Yuzuki and she held neither hatred nor affection for her new husband. In 1627 she gave birth to their only child, and named him Ruri Visser. The family had 12 quiet years together, Fernam working as a fisherman and translator while Yuzuki was the mother of the house, occasionally giving performances at the imekura as a skilled Shamisen player. In 1639 the Portuguese were kicked out of the country. Fernam barely managed to stay by claiming he was Dutch, but 2 more years later he was also expelled and confined to Dejima, the trading island. Yuzuki was not allowed to accompany him and hid Ruri's hair color from the authorities to help her keep him with her.
For the next five years, mother and son worked at the imekura that had treated Yuzuki so well, as musicians and helping hands around the shop. In 1646 Yuzuki contracted smallpox and died from it. Ruri stayed at the shop after her death, continuing to perform and help out, but less than one year later disaster would strike. Hearing a disturbance in one the girl's rooms, Ruri went to investigate and throw out her customer if needed, but instead he walked into a murder scene. Muzon had killed the girl and turned on Ruri, injuring him. Ruri stabbed Muzon with one of the hairpins and wound up getting the master of demon's blood on him. This turned him into a demon. Muzon was uninterested in the boy and left, leaving Ruri to be named the murderer and a monster. Fleeing the imekura he hid on a nearby mountain, running northwest into the greater Kushu area. There he found a mountain with an old temple that had been occupied by catholics until they were expelled and executed. Due to the recency of the events the place was in fairly good condition, and even had a basement which was previously a cellar.
Sixty years later and local villages had come to fix up the old temple, renovating it into the shrine for their new local deity. There was some argument over whether they were a Shinatsuhiko or Jizō, so the temple name was Tabisakikiri, the Destination of Fog shrine. This was due to a persistent wind and light fog that hung over the mountain at night, and that no traveler with women and children in their group met any misfortune. Bandits, thieves, and even corrupt officials passing through the vicinity of the mountain all vanished or were met with great misfortunes. All the while, Ruri held back and clung to the remnants of his humanity, though he was already forgetting why women and children smelt so appetizing.
Ruri spent the next 200 years pretending to be a mountain deity, until twin children on the run from kidnappers and abusers sought refuge on his mountain. Reluctant to kill what he saw as a paltry meal, Ruri raised them. When they reached the right age he sent them away, rather than follow through on his promise to eat them. They left under threat that, should they return, he would not let them escape alive. Ten years later they did return, as demon slayers to dispatch their demon guardian. Ruri fought them both but inevitably lost. He was then confined to the Wisteria mountain and might still linger within the shadows of the peak.
