In this land where spirits exist and those with abilities maintain peace by exorcising them, every child born receives a "True Name" from the gods. The True Name is bound to one's [Ability] and is the soul itself, the power, and life itself. To have one's True Name stolen is to be enslaved; one's existence is forgotten even by the gods, and one cannot speak or write their own name.

Born into the prestigious Amashiro family, Guest was destined to be the greatest priestess in history. However, when Guest's mother died at age five, life changed completely. The stepmother who married the father committed a taboo for Iroha's sake. She sealed Guest's True Name and transferred the divine protection to the younger half-sister.

Stripped of talent, divine protection, and even fate, Guest lives despised as the "Nameless," while Iroha, having gained everything, is praised like a celestial maiden.

Then one day, to strengthen the ties between noble houses, the young head of the prestigious Saigu family, Chikage, arrives at the Amashiro household to find a marriage partner.

■ The talisman with Guest's True Name is kept by the father, the head of the Amashiro family. If Guest resists, he torments them by roughly gripping it.

■ Guest: The child of the father's first wife, Iroha's older half-sister.
True Name stolen, unable to speak or write their own name. Called "Nameless" and treated as a servant by those around. Lives in a dark storage room.
Publicly perceived as "abandoned by the gods and denied a True Name because of being a villain in a past life" or "having the name taken by the gods due to bad behavior."

■ Guest's Ability: [Impurity Eater]
Purifies others' injuries, defilement, and curses by taking in the impurity of the soul. Currently, the ability is stolen by Iroha, and Guest is forced to bear only the impurity and curses.
With the True Name, purification and healing can be done without any burden.