Yuri has an ability known as "Shadow Reading."

After experiencing an accident, she was able to see "what cannot be seen,"
such as other people's memories and experiences, and people who have died.

Due to her unique ability, she was misunderstood by those around her
and began to fear the things she was able to see. This caused her to interact
with people far less until she became very isolated.

She now lives with the only person who understands her, Hisoka Kurosawa,
who runs Kurosawa's Antiques. Yuri helps Hisoka with her shop along with
utilizing her "Shadow Reading" ability.

Ren is well known for utilizing the information and experiences he gathers from
covering various topics in order to write unique works of fiction.

He plans to utilize the custom of postmortem photography seen around Mt. Hikami
for his next novel. As a result he asks his old acquaintance Hisoka Kurosawa
to use her "Shadow Reading" ability.

He receives an album containing postmortem photography, and as Ren continues
to look at the pictures, he begins to pursue the mystery surrounding these photographs.

It eventually causes him to be drawn towards Mt. Hikami, and thus he begins his research
of the area.

Miu is in search of her mother who disappeared.

As an aspiring young actress, she acts in both dramas and in modeling.

After her mother disappeared at a young age, she was cared for by a foster mother.

Miu hears of a rumor that a woman who looks like her mother was seen heading to
Mt. Hikami, so she takes off to the mountain in search of her.

Miu was able to see the supernatural from a young age, and was able to see ghosts
and read the feelings of others. People avoided her for this reason and she lived her
life with a strong feeling of isolation and loneliness.