The country was still at war.

In the far north, on the island of Hokkaido, the last holdouts of the Tokugawa shogunate were fighting under the banner of the short-lived Ezo Republic. The 戊辰戦争 (Boshin Sensō) — the Boshin War — would not officially end until the summer of 1869. Yet in April, Emperor Meiji (明治天皇, Meiji Tennō) made the journey that, more than any battle, declared the old world over.

He was sixteen years old. Born in 1852 as the son of Emperor Kōmei (孝明天皇), he had ascended to the throne in 1867 at age fourteen, swept into history by the political storm of the Meiji Restoration. In theory, he was the 122nd emperor in an unbroken divine line stretching back to the sun goddess Amaterasu (天照大神, Amaterasu Ōmikami) herself. In practice, he had grown up in the ancient capital of Kyoto, a ceremonial ornament in a gilded cage, while the Tokugawa shoguns in Edo governed the actual country.

The Restoration had changed that — officially. But legitimacy, in Japan as everywhere, is built through symbol as much as law. The young emperor needed to do something that made his reclaimed authority visible. He needed to go to Ise.

伊勢神宮 (Ise-jingū) — Ise Grand Shrine — is the spiritual center of the Japanese imperial mythology. Its inner shrine, the Naikū (内宮), is dedicated to Amaterasu, from whom all emperors were said to descend. The shrine had been a place of pilgrimage for ordinary Japanese since antiquity; during the Edo period, millions came every year in great waves of popular devotion called お陰参り (okage mairi). The roads to Ise were among the most traveled in Japan.

Yet no reigning emperor had personally visited since the seventh century — a gap of more than 1,200 years. The Tokugawa system, like the warrior governments before it, found it convenient to keep the emperor in Kyoto, performing rituals, issuing blessings, but never exercising real power. An emperor at Ise, performing the rites of his divine ancestry, was an emperor who looked like what he was supposed to be. That was dangerous.

The year before Meiji's visit, the new government had issued the 神仏分離令 (shinbutsu bunri rei) — the decree separating Shinto from Buddhism. For centuries, the two religions had coexisted and intertwined at shrines across Japan, including Ise. Now the Buddhist priests were expelled. The shrine was purified and reorganized as the crown of a new State Shinto hierarchy, with all of Japan's shrines ranked beneath it. The stage was set.

When Meiji made his pilgrimage in April 1869, the symbolism was total. Here was the living descendant of Amaterasu, entering for the first time in over a millennium the house built in honor of his divine ancestor. Here was the proof, rendered in ceremony and procession, that Japan's legitimate authority was not military but divine — that it had always resided in the imperial line, not the shogunate that had usurped it.

The great ukiyo-e (浮世絵) artist Sadahide Utagawa captured the procession in a woodblock print made that same year — one of the last masters of an art form that was itself passing, the Edo world preserving its own end in ink on paper.

The consequences of that pilgrimage stretched far beyond 1869. State Shinto — with Ise at its apex and the emperor as its living god — became the ideological spine of the Meiji state, and later of the nationalist governments that followed. The machinery built in part on that symbolic act in April 1869 drove Japan toward the catastrophes of the 1930s and 1940s. A boy's journey to a shrine set forces in motion that would not stop for eighty years.

But on that April morning, it was simply this: a teenager riding in a palanquin through ancient cedar forests, approaching a gate that no emperor had passed in longer than anyone could remember. The shogun's era had not ended at the Battle of Toba-Fushimi. It ended here, in the silence of a shrine, when the divine sovereign finally walked back into his own inheritance.