A fearsome youkai who drops straight down onto you from above when you're walking the streets late at night. She usually lives in caves or wells.

She's a bashful youkai who likes confined spaces, so she usually spends her time inside buckets.

A youkai that lives primarily in abandoned cities and deep in caves. She has no qualms about fighting humans. She has a bright, combative personality. Her power makes everyone she meets hate her.

However, she herself wouldn't inflict disease on someone without reason. She's a bright, fun-loving youkai if you get to know her, so she's popular among the youkai that live underground.

Once, she was the protector, or guardian spirit, of the pit linking the underworld with the overworld. She watched over people to make sure that they could get to the underworld and back to the overworld safely.

However, as she is extremely jealous, she couldn't stand the people who looked like they were having fun going to and fro. Whenever she saw someone like that, she would hinder their travel somehow.

One of the oni who, together with Suika, was said to be one of the big four of the mountain. She now lives in the Old Capital. The Old Capital was once part of Hell, but it was cast aside during the downsizing of Hell.

As one would expect from an oni, Yuugi enjoys every day by drinking and raising a ruckus. When she heard some strong humans had appeared, she rushed out while she is still drunk...

The Palace of the Earth Spirits is built above what was the Hell of Blazing Fires, and this is where she took up residence. Since she can read others' minds, all sorts of youkai and spirits fear her, so eventually people stopped visiting the Palace of the Earth Spirits.

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.

However, what shouldn't have happened did: a human came from above ground, and she was surprised when they started asking about vengeful spirits and a geyser. 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' mind about the vengeful spirits or the geysers. Suspicious, Satori decided to test them.

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.

One day, she felt a disturbance in what was left of the Hell of Blazing Fires. The flames were much stronger than usual. Regulating the flames was Utsuho's job. Orin went to visit Utsuho and was surprised by what she found. 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 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 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.

A crow that gives off a conspicuously-colored light.


　On her left leg is the "Leg of fission";
　On her right leg is the "Leg of fusion";
　Finally, on her right arm is that which controls this, the "Third Leg"

Using these three legs, it's said she can control the ultimate energy.

...Someone from above stole into Hell without anyone noticing.
Then, she began to speak.
Her voice stoked Utsuho's curiosity.

"The Hell of Blazing Fires hides the secret to the ultimate form of energy that humans can attain. You, crow that lives within the blaze ...

You should be able to contain that power within your body. We can use that to bring about the wishes of not just the underground, but the above ground as well."

She was enveloped in light, and she felt someone entering her body. When she came to, her body had changed greatly.

Utsuho enjoyed using her new power, and before she knew it the Hell of Blazing Fires had regained its original heat.

- Yatagarasu, the divine three-legged crow

　　　The power that had entered her body was the god called the Yatagarasu. It's said to be a three-legged crow that lives on the sun.

　　　The ultimate power the Yatagarasu possessed was the power to create atoms, nuclear fusion. Atomic energy is the ultimate fantasy left for the future.

Satori Komeiji's younger sister. Like Satori, she was a youkai who has the ability to read others' minds. However, knowing that people don't like having their minds read, Koishi closed her mind-reading third eye.

As a result, she lost her ability to read others' minds, but in return she gained the ability to take action unconsciously. The denizens of the underground no longer hated her, but at the same time, they never feared her and animals no longer loved her.

She heard that a human had come from above ground and had fought with her sister, Okuu, and the other pets, and was amazed at the incredible power-up Okuu had gotten, so she decided to go see the above ground world herself.

Because she could act unconsciously, she remained unnoticed. She could go above ground, sneak past sleeping shrine maidens, or go into the mountain the tengu guarded, and nobody would take notice of her. In a way, it was convenient, but she was also lonely. However, she had no mind capable of feeling this loneliness.

At her destination, the shrine atop the mountain, she happened to meet a human. Her meeting with this stranger changed her mental state ever so slightly. She thought, how amazing it is to meet such an interesting person, and wanted to know more about her. For the first time, she regretted having closed her third eye.

I'll start by inviting her underground to the Palace of the Earth Spirits.
　I wonder what kind of fight she had with my sister, Okuu, and Orin.
　I wonder what kind of youkai she's fought with.
　I want to hear her endless stories.


When she thought this, Koishi felt the lid of her third eye begin to shift a little.