Miri

Overview
Younger sister who looks up to Ichinosuke and calls him ‘Onii’.

Famous as a stock trader and has quite considerable wealth.

After Ichinosuke’s death, she identified the cause of this death and set off for Mount Fuji to travel to the Otherworld.

Background
Once that was more than a thousand years ago. At a time called the Heian period. A girl was destined to die at Mount Fuji. That girl was touted as a peerless beauty and captivated many men, charming the hearts of the people at that time as well as even the Emperor.

She thought that it was happiness. She thought that she had obtained everything.

Until those men came. A bunch of Diviners (Onmyoji) visited the Emperor and asked him to calm the anger of Mount Fuji by using her magnificent power.

Putting it simply, using her power meant using her as a human sacrifice.

The Diviners perceived that their own power wouldn’t be able to achieve anything and decided to use her life in exchange for stopping the eruption of Mount Fuji. And, those Diviners possessed great powers.

To the extent that no matter even if it’s the Emperor, he would also not want to turn them into his enemies.

To the extent that it could be thought to be cheap to be able to settle it by only having to offer a single girl.And, she was allowed to be taken away.

To the summit of Mount Fuji. There, she was meant to have her body burn and pass away.However, she did not die. Goddess — The Gods of Otherworld transported her body to the different world.

And, using the power bestowed upon her by the Goddess — she reincarnated as a demon and after living for hundreds of years, she became a Demon Lord.

It was then that she named herself Famiris‧Rariti. 12 years ago, she was sealed by the Hero and her soul was sent to Japan. There, she was surprised when she was incarnated as a Japanese. That the country had changed to that extent in only a thousand years. Then, when she grew up and became able to read, she found out. In the end, due to her reincarnation into the different world, she did not fulfill her role as a true human sacrifice and Mount Fuji erupted multiple times during the Heian period, causing many sacrifices. And, there was one more fact.

She found out that her own death and her own name was beautified as the tale of Kaguya Hime.

Not knowing if the power of the Goddess was incomplete or it was due to other factors, that tale was left behind as the oldest tale in Japan.

Of course, including the era, a lot of the content was vastly different from the historical fact but the jobs of her parents at that time and the fact that her name was named after the treasure that they were asked to search for by nobles at that time, it was without a doubt that she was the model of the story.

She could only give a bitter smile at how the messenger to Mount Fuji was written as a messenger from the moon.It’s probably because Mount Fuji at that time was the land where the moon comes out from when viewed from the capital.

Even so, Kaguya — Famiris‧Rariti — no, Kusunoki Miri was about to grab hold onto peace.

Getting reincarnated, meeting Onii, spending peaceful days, she was also grateful to the hero who drove her off into this peaceful world.