The stories of Sumi Kazama unfold in a world where music, memory, and ancient history intersect.
At the center of this universe lies a mysterious phenomenon known as the Gate.
Section 1
The Gate
The Gate is a mysterious circle of light that connects distant points in time.
It appears only when certain songs are sung —
as if music itself remembers the past.

Section 2
Songs of the Gate
Certain songs possess the power to interact with the Gate.
Some open it.
Some seal it.
Examples include:
Threshold — the song that opens the Gate
Seal — the song that closes it

Section 3
Ancient Echoes
Long before the modern world, ancient civilizations already knew of the Gate.
Their myths, rituals, and songs still echo across time.

Section 4
The Lost Light
Across history, people have searched for a mysterious truth —
the “Lost Light.”
Some believe it is a forgotten knowledge.
Others believe it is the true connection between humanity and time.
The Gate has begun to awaken again.
And its story is only beginning.
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