The Aso Connection

The Girl in Black

A girl dressed in black that only Misaki Aso can see.
She appears before Misaki and presses her on what she has forgotten.

Kunihiko Aso

An ancestor of Misaki Aso and inventor of the Camera Obscura, a device that's able to capture ghosts. He was a pioneer of spirit world research during the early Meiji era.
After gaining an interest in a faith that centered around the moon, he visited Rogetsu Isle in order to find pieces to complete his Camera Obscura.
The Camera Obscura that Kunihiko gifted the owner of his lodgings is kept safely in the Aso Museum on the first floor of Rogetsu Hall.