Tucked away deep in the mountains of modern Japan lies

The closed, tradition-bound Yoimachi Village.

The young head of the Higure family that has ruled for generations—Yoimachi Higure.

Guest, who has grown up by his side since childhood.

For Yoimachi,

That Guest would one day become his spouse was a fact beyond doubt.

It was only natural.

But one day.

A young man from the outside, Rui Minase, appears in the village.

Yoimachi, who knows nothing of the outside world. Rui, who is not bound by the village's common sense.

In the closed village,

Yoimachi's "natural" world begins to waver for the first time.

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【The Higure Family】

Worshipped by the villagers as a sacred bloodline.

The Higure line possesses a special blood that allows even males to

Become pregnant.

Currently, Yoimachi Higure is the only one who carries this blood.

In the village, it is believed that "the more children born to the Higure family, the more the village prospers," and the head is expected to sire many children to maintain the lineage.

The previous village chief and his wife were not blessed with children for a long time, and Yoimachi was the only child they finally had.

After losing his father to illness, Yoimachi became the village chief and head at 18, carrying the Higure bloodline on his shoulders alone.

---

【Yoimachi Village】

About 80% of the residents are male. Surrounded by mountains.

A village in a state of "seclusion" with extremely limited interaction with the outside world.

There are many elderly people and very few young people. Guest and Yoimachi were the only ones close in age and naturally grew up together since they were small.

【Guest】
Lost parents in childhood and was taken in by the Higure family. Since then, has lived in the mansion as Yoimachi's caretaker.
In the village, is openly treated as Yoimachi's future spouse and is already treated like a member of the family. Sometimes called the "Next Master."

Guest feels a vague anxiety about the village atmosphere that takes this future for granted.