A boy is swept away to a different time, carried on the notes of a mysterious song.
When he awakens, he finds himself in a strange place.
Old-fashioned buildings within a nostalgic world.
It was as if he jumped into the Taisho era pages of his history book.

It feels nostalgic, but something is off—.
After a period of isolation, Japan has shifted to a democratic government and a culture of freedom.
There is excitement amongst its people, and the country is vibrant.
The future is bright with youths leisurely striding down newly-paved streets.
There is no starvation or poverty in sight, and guns and weapons are nowhere to be seen.
All lives are equal, without discrimination or differences in rank. It is a world where all is blessed.

Did such a time ever exist…?

Here, a strange jamais vu mixes with nostalgia and discomfort.
Here, the history you didn’t even know existed will now be unraveled.

Norn

An enormous, round airship.
It’s structured as if an entire town was turned into a ship; there are residential areas, a field, woods, and waterfront. It travels quietly, floating much like clouds. The only passengers on the ship should be espers and hiyokos, however…

Hiyoko

Chick-like creatures who live on the Norn.
They are intricately involved in the espers’ everyday lives. There are several hiyokos, but even the espers don’t know their true identities.

The World

An entity widely known as “the will of the many made one” to those who live in the modern world. Sorata Suzuhara, who came from the Heisei era, interprets it as some kind of organization like the United Nations.

Powers 

Special abilities held by the youngsters on the airship, Norn.
They range from those involving nature, such as fire, water, etc., to those that affect the human mind. Only young people have such powers, but the reason why they became espers is a complete mystery. Their powers play a significant role in the Norn’s journey.