Spoilers for the early arcs of Yomi no Tsugai.
Western readers coming to Yomi no Tsugai from Fullmetal Alchemist tend to look for the same emotional architecture: two siblings, a catastrophic mistake, a journey to set things right. The surface similarities are real. But the thing driving Yomi no Tsugai is different from what drove FMA, and the difference is located in a concept that doesn’t translate cleanly into English.
The concept is 家 — ie. House. Not a building. A system.
What “ie” actually means
In Japanese, 家 carries meanings that English splits across several words: family, household, lineage, and the institution that binds all of those together across generations. When Japanese readers talk about the ie system, they’re describing something that functioned as the basic unit of Japanese society for centuries: a structure where the individual’s identity, obligations, and future were determined by their position within a household rather than by personal choice.
The ie system was formally abolished after World War II. It persists informally in ways that every Japanese person recognizes: the weight placed on the eldest child’s responsibilities, the pressure to maintain family reputation, the sense that certain obligations to one’s household cannot be escaped by simply leaving. Japanese readers don’t need Yomi no Tsugai to explain this. They feel it as soon as the Eastern Village’s structure becomes clear.
The phrase that circulated in Japanese fan discussion: “家が血筋に呪いをかけている” — the house has put a curse on the bloodline. That framing is specific and worth sitting with. It’s not that the twins are cursed. It’s that the institution of the house is itself the curse, and the bloodline is the mechanism by which it perpetuates itself. The house doesn’t need to do anything active to curse anyone. It simply continues to exist, and its continuation is enough.
This is the ie system’s most disturbing quality, and the one that Yomi no Tsugai understands precisely: the institution doesn’t require malevolent actors to produce monstrous outcomes. The people within it aren’t doing anything they experience as wrong. They’re maintaining the household, upholding the lineage, ensuring the continuation of the system that has organized their lives and their parents’ lives and their grandparents’ lives. The curse is indistinguishable from tradition.
How it reads differently than FMA
In Fullmetal Alchemist, the Elric brothers’ tragedy is personal. Edward and Alphonse made a choice. The consequences of that choice are theirs to bear and theirs to resolve. The antagonists have their own agendas, but the brothers’ situation isn’t imposed by a system. It’s the result of their own action.
Yomi no Tsugai’s twins didn’t choose anything. Yuru and Asa were born into their roles. The Eastern Village’s belief in the power of twin bloodlines, the idea that twins born to the right lineage can reshape the world, existed before they existed. They are inheritors of a system they had no part in creating and no capacity to refuse.
Japanese readers who’d followed Arakawa across both series noted this shift explicitly. The horror in FMA is what the brothers did. The horror in Yomi no Tsugai is what was done to the twins before the story begins. That’s a different emotional register, and it maps onto something Japanese readers recognize from their own cultural inheritance: the feeling that the house you were born into has already made decisions about who you are.
The village as institution
The Eastern Village in Yomi no Tsugai functions less like a setting and more like a character, specifically like the character of ie made visible and extreme. The village’s sealed borders, its internal hierarchies, its treatment of the twins as instruments of a larger purpose: these are the ie system’s logic applied to fantasy.
Japanese fan writing on the series drew this connection directly. The comparison that kept appearing: the village isn’t evil in the way that a villain is evil. It’s operating according to its own logic, a logic that prioritizes the continuation of the household’s purpose over the wellbeing of the individuals within it. “家が人を守るのではなく、家のために人を犠牲にする” — the house doesn’t protect people; it sacrifices people for the house. That inversion is what Japanese readers found most disturbing about the Eastern Village, and it’s an inversion that requires the ie concept to fully land.
My read: Arakawa has always been interested in what institutions do to people. The State Alchemists in FMA, the agricultural industry in Silver Spoon. She keeps returning to the question of what it costs to belong to something larger than yourself. Yomi no Tsugai takes that question and removes the exit. In FMA, Edward eventually walks away from the State. In Yomi no Tsugai, the house follows you. The bloodline is the membership you can’t resign.
If the ie system behind this horror interests you, this post goes deeper into why the Eastern Village scared Japanese readers before the fantasy arrived:
