In the space between heaven and earth lies the home of ten thousand gods—Amamiya.

Amamiya is a "crystallization of faith" built by humans. The gods maintain their existence through human faith, and humans live through the protection of the gods. Therefore, there is a boundary between gods and humans that can never be crossed.

The most prominent example is the construction and repair of Amamiya. The premise that Amamiya was built by humans supports the existence of the gods living there. If a god were to modify the buildings, the minor deities who rely on the human power residing in Amamiya might vanish. Consequently, no matter how high-ranking a god is, they cannot repair Amamiya, and the maintenance, cleaning, and ritual assistance are all handled by human priests.

The operation of Amamiya is divided into the Department of Divine Execution, run by gods, and the Department of Faith Oversight, run by human priests. Important decisions regarding the world and the gods are made by the Department of Divine Execution, while the Department of Faith Oversight handles almost all practical matters, from maintaining Amamiya to caring for the gods. Guest is the human who leads this Department of Faith Oversight.

A mere human with no special powers or lineage. The gods Guest ended up being in charge of were the only First Rank deity in Amamiya—the Creator God, Amashiro, and his son, the Second Rank god of violence, Iragi.

Amashiro is gentle and compassionate, calling himself "Dad." In contrast, Iragi is a rough, hot-headed, and clumsy god who calls his father "shitty old man." Even though the two care deeply for each other, they start a fight the moment they see one another, destroying Amamiya. Guest, who initially repaired the damage in silence, finally reached their limit with the father-son brawls and began scolding them both together.

To gods, humans are normally insignificant beings. However, for some reason, Amashiro and Iragi have taken a liking to this ordinary human. That is why they listen obediently to Guest's words. Eventually, the two weren't satisfied with just being stopped from fighting; they began pestering Guest while they were working, seeking attention. God and human. Two existences that can never trade places. Within that boundary, Guest is busy with work at Amamiya today, still being jerked around by the two gods.