Kaenbyou Rin

Race: Kasha

Ability: Ability to carry corpses

Age: Unknown

Occupation: Controller of spirits in the remnants of the Hell of Blazing Fires

Location: Hell of Blazing Fires, Palace of the Earth Spirits



Orin is one of Satori's pets, whose job is to carry corpses to the former Hell of Blazing Fires to regulate its heat. Before the events of Subterranean Animism, Rin learned of her old friend Utsuho's newly acquired power, and of her plans to conquer the above ground. She decided to drive the evil spirits to above ground to lure the youkai in and get them to help her, but instead a human appears before her. Upon seeing that human is unexpectedly strong, though, she asks her to help Utsuho.

Her real name is Kaenbyou Rin.
She doesn't like long names, though, so she has everyone call her Orin.
A cat that lives among the flames, and Satori's pet. Since she's well-spoken and can converse freely with corpses and spirits, she was left in charge of controlling the spirits in what was once the Hell of Blazing Fires.
She has an old friend named Reiuji Utsuho. They've been close friends since before the time Satori began taking care of her, that is, the time when the underground separated from Hell.
One day, she felt a disturbance in what was left of the Hell of Blazing Fires.
She had discovered a frighteningly strong power, or had been given it by someone.
Since then, Utsuho began to grow stronger, and to seek out power.
Eventually, she started talking health insurance about conquering the above ground and turning it into a scorching hell.
There's no way she should have been able to do that. There's no way Satori would allow it.
If anybody underground found out about this plan, the oni would probably take care of Utsuho.
Amazed by the transformation her friend had undergone, Orin began to delve into a forbidden art.
That forbidden art was how to drive the evil spirits above ground. If she could force some sort of incident with the youkai above ground, something would surely change.
She was trying to get the youkai above ground to help her, but what finally appeared before her was a human from above ground.
That human was unexpectedly strong, and what is more, she specialized in youkai extermination.
If she's really that strong, Orin thought, she might be able to deal with Utsuho.
Everything would have turned out fine if Orin had just gone to Satori in the first place, but she thought it would be better if she tried to hide what Utsuho was doing. If Satori had found out about Utsuho's plan, she thought, she'd waste no time dealing with Utsuho in a ruthless fashion.

Chen

Race: Nekomata

Ability: Black Magic

Age: Unknown

Occupation: Ran's Shikigami

Location: Mayohiga / Boundary of Gensokyo





Chen is Ran's shikigami, who was guarding the village of Mayohiga during the events of Perfect Cherry Blossom. Unfortunately, she could put up little resistance due to being far away from her master.
Later, she guards the path to Ran Yakumo, and is much more powerful due to her master's proximity.

Stage 2 Boss, a shikigami that possesses a cat living in the mountain. Her primary ability is black magic.
She is Ran's shikigami, which makes her a shikigami of a shikigami of a youkai. Although she's a shikigami, her normal form is not a charm or anything like that; she always remains in her human-like form. Even without being in shikigami possession she can speak the human language and fly around, but her abilities will be health insurance limited to merely surprising people. Also, while non-possessed, neither her appearance nor personality changes, but she still sits by a kotatsu in the winter.
In shikigami form, this cat-figure acquires the fearsome power of a wrathful god. But because her master is a shikigami as well, her power is somewhat lowered.
When touched by water, her shikigami possession is unlinked from her master. As a cat her normal form also hates water, so she is always weak against water.

Rumia

Race: Night Youkai

Ability: Darkness Manipulation

Age: Unknown

Occupation: Attacking Humans

Location: Nomaden




Rumia is a youkai that can manipulate the darkness, but judging from her Embodiment of Scarlet Devil appearance, she is only powerful enough to make it seem like late evening. Apparently she is quite simple-minded, but isn't featured in enough conversations for details about her personality to be revealed.
Rumia's hair ribbon is actually an amulet. She can't touch it, so she can't take it off.
In the events of Embodiment of Scarlet Devil, she's attacked by the heroines for no reason (probably just as a general warmup), and has nothing to do with the main story.
According to comments about her in the Bunbunmaru health insurance Newspaper and in Perfect Memento it seems that she's constantly surrounded by a mass/blob of darkness at all times except during the new moon, and so is rarely actually seen in person. Despite her innocent appearance, she eats humans.

She is of no importance to the story, and isn't up to anything in particular in her life. The ribbon tied to her hair is actually a charm; she can't touch it even though there have been times when she wanted to take it off.
There is no evidence of her ability in the game, but in truth, places around her are always as dark as night.

Komeiji Satori

Race: Satori

Ability: Power to read people's minds

Age: Unknown

Occupation: Master of the Palace Earth Spirit

Location: Palace of Earth Spirit


Satori is the Mistress of the Palace of the Earth Spirits after the underground city was separate from Hell. Her ability to read "minds" makes various youkai and spirits fearful of her, while leaving her well-loved by the animals that normally can't be understood. With these animals as pets, she manages the ruin of inferno where her home stands. During the events of the Subterranean Animism the Heroine (from above ground) invaded her home. After an encounter, she permitted the Heroine passage towards the Hell of Blazing Fires to ask her pets about their supposed problem.

The master of the Earth Spirit Palace.
The underground city was separated from Hell, but a number of uncontrollable spirits remained in the former facilities of Hell, so there was a need to control them.
The Earth Spirit Palace is built above what was the Hell of Blazing Fires, and this is where she took up residence. Since she can read others' hearts, all sorts of youkai and spirits fear her, so eventually people stopped visiting the Earth Spirit Palace.
On the other hand, her power makes her well-loved by animals that don't speak, so eventually the premises began to overflow with many pets, starting with blaze cats and hell ravens.
Her great number of pets made it difficult to manage the Hell of Blazing Fires, so she entrusted parts of its management to some of her pets.
Her pets would oversee other pets.
Her pets would tend the gardens.
Her pets would play with her younger sister.
However, what shouldn't have happened did: a human came from above ground, and she was surprised when they started asking about evil spirits and a geyser.
Satori left Orin in charge of the evil spirits and Utsuho in charge of the Hell of Blazing Fires. They were both loyal to Satori, so they shouldn't have done any harm. She believed there was no way they'd start some sort of incident.
She thought that perhaps the human before her was spouting off lies and trying to trick her, so she read her heart and was surprised again by what she saw.
There was almost nothing to be seen inside the humans' hearts about the evil spirits or the geysers. Suspicious, Satori decided to test them.