※The serialized version has started!

https://ncode.syosetu.com/n2756ju/

The protagonist, Rei, was born as the eldest daughter of Count Saiga's family.

In this world where magic is everything, Rei, the only one without magical power, lived a daily life of abuse from both her family and those around her.

One day, by royal decree, her younger sister was to marry into the Ichijo family, a noble family in the Far East, a country across the sea.

However, her new home was a demon-haunted land where terrifying yokai roamed. Furthermore, the head of the Ichijo family, Satoru Ichijo, was given the nickname "The Demon of the Far East."

Her father, who doted on his own child, decided to send Rei to the Far East instead of his beloved daughter, Arial.

Believing she could escape her hellish environment, Rei agreed and crossed the sea.

"You possess tremendous spiritual power. It's magnificent."

As it turned out, Rei, who possessed immense spiritual power in place of magical power, became doted on by Satoru.

And Rei was revealed to be the reincarnation of the great yokai, Zashiki-warashi.

Possessing the power to bring prosperity to any household simply by her presence, she was a person whom the people of the Far East coveted beyond measure.

Meanwhile, the Saiga family, having lost Rei, faced a rapid decline.